1499939078400 has 1215 divisors, whose sum is σ = 6478079068461. Its totient is φ = 342843217920.

The previous prime is 1499939078369. The next prime is 1499939078419. The reversal of 1499939078400 is 48709399941.

The square root of 1499939078400 is 1224720.

It is a perfect power (a square), and thus also a powerful number.

1499939078400 is a `hidden beast` number, since 1 + 49 + 99 + 39 + 0 + 78 + 400 = 666.

It can be written as a sum of positive squares in only one way, i.e., 539978068224 + 959961010176 = 734832^2 + 979776^2 .

It is a tau number, because it is divible by the number of its divisors (1215).

It is a super-2 number, since 2×1499939078400² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 214277011197 + ... + 214277011203.

Almost surely, 2^{1499939078400} is an apocalyptic number.

1499939078400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1499939078400 is the 1224720-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1499939078400

1499939078400 is an abundant number, since it is smaller than the sum of its proper divisors (4978139990061).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1499939078400 is an frugal number, since it uses more digits than its factorization.

1499939078400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 63.

The spelling of 1499939078400 in words is "one trillion, four hundred ninety-nine billion, nine hundred thirty-nine million, seventy-eight thousand, four hundred".