39940901 has 16 divisors (see below), whose sum is σ = 53628288. Its totient is φ = 28728000.

The previous prime is 39940897. The next prime is 39940919. The reversal of 39940901 is 10904993.

It is not a de Polignac number, because 39940901 - 2² = 39940897 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39940921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18950 + ... + 20951.

It is an arithmetic number, because the mean of its divisors is an integer number (3351768).

Almost surely, 2^39940901 is an apocalyptic number.

It is an amenable number.

39940901 is a deficient number, since it is larger than the sum of its proper divisors (13687387).

39940901 is a wasteful number, since it uses less digits than its factorization.

39940901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39932.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 39940901 is about 6319.8814071152. The cubic root of 39940901 is about 341.8266765361.

The spelling of 39940901 in words is "thirty-nine million, nine hundred forty thousand, nine hundred one".