70739239 has 4 divisors (see below), whose sum is σ = 70771680. Its totient is φ = 70706800.

The previous prime is 70739231. The next prime is 70739269. The reversal of 70739239 is 93293707.

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 70739239 - 2³ = 70739231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70739231) 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, 12694 + ... + 17395.

It is an arithmetic number, because the mean of its divisors is an integer number (17692920).

Almost surely, 2^70739239 is an apocalyptic number.

70739239 is a deficient number, since it is larger than the sum of its proper divisors (32441).

70739239 is a wasteful number, since it uses less digits than its factorization.

70739239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32440.

The product of its (nonzero) digits is 71442, while the sum is 40.

The square root of 70739239 is about 8410.6622212523. The cubic root of 70739239 is about 413.5742217215.

The spelling of 70739239 in words is "seventy million, seven hundred thirty-nine thousand, two hundred thirty-nine".