1273399470 has 96 divisors (see below), whose sum is σ = 3797995968. Its totient is φ = 289972224.

The previous prime is 1273399469. The next prime is 1273399481. The reversal of 1273399470 is 749933721.

It is a super-3 number, since 3×1273399470³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 170862 + ... + 178158.

It is an arithmetic number, because the mean of its divisors is an integer number (39562458).

Almost surely, 2^1273399470 is an apocalyptic number.

1273399470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1273399470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1898997984).

1273399470 is an abundant number, since it is smaller than the sum of its proper divisors (2524596498).

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

1273399470 is a wasteful number, since it uses less digits than its factorization.

1273399470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7594 (or 7591 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 1273399470 is about 35684.7232019530. The cubic root of 1273399470 is about 1083.8975174648.

The spelling of 1273399470 in words is "one billion, two hundred seventy-three million, three hundred ninety-nine thousand, four hundred seventy".