70749939 has 16 divisors (see below), whose sum is σ = 106937600. Its totient is φ = 41246496.

The previous prime is 70749919. The next prime is 70749941. The reversal of 70749939 is 93994707.

It is not a de Polignac number, because 70749939 - 2²⁰ = 69701363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70749919) 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, 46999 + ... + 48480.

It is an arithmetic number, because the mean of its divisors is an integer number (6683600).

Almost surely, 2^70749939 is an apocalyptic number.

70749939 is a deficient number, since it is larger than the sum of its proper divisors (36187661).

70749939 is a wasteful number, since it uses less digits than its factorization.

70749939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95514.

The product of its (nonzero) digits is 428652, while the sum is 48.

The square root of 70749939 is about 8411.2982945560. The cubic root of 70749939 is about 413.5950730488.

The spelling of 70749939 in words is "seventy million, seven hundred forty-nine thousand, nine hundred thirty-nine".