70319939 has 4 divisors (see below), whose sum is σ = 74456424. Its totient is φ = 66183456.

The previous prime is 70319929. The next prime is 70319959. The reversal of 70319939 is 93991307.

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 70319939 - 2¹⁶ = 70254403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70319896 and 70319905.

It is not an unprimeable number, because it can be changed into a prime (70319929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2068217 + ... + 2068250.

It is an arithmetic number, because the mean of its divisors is an integer number (18614106).

Almost surely, 2^70319939 is an apocalyptic number.

70319939 is a deficient number, since it is larger than the sum of its proper divisors (4136485).

70319939 is a wasteful number, since it uses less digits than its factorization.

70319939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4136484.

The product of its (nonzero) digits is 45927, while the sum is 41.

The square root of 70319939 is about 8385.6984801506. The cubic root of 70319939 is about 412.7554614722.

The spelling of 70319939 in words is "seventy million, three hundred nineteen thousand, nine hundred thirty-nine".