70402939 has 4 divisors (see below), whose sum is σ = 70527240. Its totient is φ = 70278640.

The previous prime is 70402909. The next prime is 70402973. The reversal of 70402939 is 93920407.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70402939 - 2⁵ = 70402907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70402909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61297 + ... + 62434.

It is an arithmetic number, because the mean of its divisors is an integer number (17631810).

Almost surely, 2^70402939 is an apocalyptic number.

70402939 is a deficient number, since it is larger than the sum of its proper divisors (124301).

70402939 is a wasteful number, since it uses less digits than its factorization.

70402939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124300.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 70402939 is about 8390.6459226927. The cubic root of 70402939 is about 412.9177920709.

The spelling of 70402939 in words is "seventy million, four hundred two thousand, nine hundred thirty-nine".