7497428939 has 16 divisors (see below), whose sum is σ = 10066479360. Its totient is φ = 5392755360.

The previous prime is 7497428929. The next prime is 7497428941. The reversal of 7497428939 is 9398247947.

It is a cyclic number.

It is not a de Polignac number, because 7497428939 - 2⁴ = 7497428923 is a prime.

It is a super-2 number, since 2×7497428939² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (7497428909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3743969 + ... + 3745970.

It is an arithmetic number, because the mean of its divisors is an integer number (629154960).

Almost surely, 2^7497428939 is an apocalyptic number.

7497428939 is a deficient number, since it is larger than the sum of its proper divisors (2569050421).

7497428939 is a wasteful number, since it uses less digits than its factorization.

7497428939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7489970.

The product of its digits is 27433728, while the sum is 62.

The square root of 7497428939 is about 86587.6950784579. The cubic root of 7497428939 is about 1957.2101202757.

The spelling of 7497428939 in words is "seven billion, four hundred ninety-seven million, four hundred twenty-eight thousand, nine hundred thirty-nine".