40439593 has 4 divisors (see below), whose sum is σ = 41744128. Its totient is φ = 39135060.

The previous prime is 40439587. The next prime is 40439621. The reversal of 40439593 is 39593404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40439593 - 2⁵ = 40439561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40439513) 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, 652221 + ... + 652282.

It is an arithmetic number, because the mean of its divisors is an integer number (10436032).

Almost surely, 2^40439593 is an apocalyptic number.

It is an amenable number.

40439593 is a deficient number, since it is larger than the sum of its proper divisors (1304535).

40439593 is a wasteful number, since it uses less digits than its factorization.

40439593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304534.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 40439593 is about 6359.2132375004. The cubic root of 40439593 is about 343.2434501464.

The spelling of 40439593 in words is "forty million, four hundred thirty-nine thousand, five hundred ninety-three".