39940737 has 8 divisors (see below), whose sum is σ = 53312736. Its totient is φ = 26597952.

The previous prime is 39940711. The next prime is 39940751. The reversal of 39940737 is 73704993.

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

It is not a de Polignac number, because 39940737 - 2⁷ = 39940609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39940757) 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, 3883 + ... + 9744.

It is an arithmetic number, because the mean of its divisors is an integer number (6664092).

Almost surely, 2^39940737 is an apocalyptic number.

It is an amenable number.

39940737 is a deficient number, since it is larger than the sum of its proper divisors (13371999).

39940737 is a wasteful number, since it uses less digits than its factorization.

39940737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14607.

The product of its (nonzero) digits is 142884, while the sum is 42.

The square root of 39940737 is about 6319.8684321748. The cubic root of 39940737 is about 341.8262086811.

The spelling of 39940737 in words is "thirty-nine million, nine hundred forty thousand, seven hundred thirty-seven".