39957049 has 8 divisors (see below), whose sum is σ = 45484992. Its totient is φ = 34745040.

The previous prime is 39957031. The next prime is 39957091. The reversal of 39957049 is 94075993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39957049 - 2⁹ = 39956537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39957349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78714 + ... + 79219.

It is an arithmetic number, because the mean of its divisors is an integer number (5685624).

Almost surely, 2^39957049 is an apocalyptic number.

It is an amenable number.

39957049 is a deficient number, since it is larger than the sum of its proper divisors (5527943).

39957049 is a wasteful number, since it uses less digits than its factorization.

39957049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157967.

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 39957049 is about 6321.1588336317. The cubic root of 39957049 is about 341.8727368679.

The spelling of 39957049 in words is "thirty-nine million, nine hundred fifty-seven thousand, forty-nine".