40570239 has 4 divisors (see below), whose sum is σ = 54093656. Its totient is φ = 27046824.

The previous prime is 40570223. The next prime is 40570247. The reversal of 40570239 is 93207504.

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

It is not a de Polignac number, because 40570239 - 2⁴ = 40570223 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 (40570219) 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, 6761704 + ... + 6761709.

It is an arithmetic number, because the mean of its divisors is an integer number (13523414).

Almost surely, 2^40570239 is an apocalyptic number.

40570239 is a deficient number, since it is larger than the sum of its proper divisors (13523417).

40570239 is a wasteful number, since it uses less digits than its factorization.

40570239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13523416.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 40570239 is about 6369.4771370969. The cubic root of 40570239 is about 343.6126854751.

The spelling of 40570239 in words is "forty million, five hundred seventy thousand, two hundred thirty-nine".