1039399649280 has 912 divisors, whose sum is σ = 3921935194944. Its totient is φ = 253671505920.

The previous prime is 1039399649279. The next prime is 1039399649287. The reversal of 1039399649280 is 829469939301.

1039399649280 is a `hidden beast` number, since 1 + 0 + 39 + 39 + 9 + 6 + 492 + 80 = 666.

It is a super-3 number, since 3×1039399649280³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1039399649287) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14238351324 + ... + 14238351396.

Almost surely, 2^{1039399649280} is an apocalyptic number.

1039399649280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1039399649280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1960967597472).

1039399649280 is an abundant number, since it is smaller than the sum of its proper divisors (2882535545664).

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

1039399649280 is an frugal number, since it uses more digits than its factorization.

1039399649280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 22674816, while the sum is 63.

The spelling of 1039399649280 in words is "one trillion, thirty-nine billion, three hundred ninety-nine million, six hundred forty-nine thousand, two hundred eighty".