39901557 has 16 divisors (see below), whose sum is σ = 55623680. Its totient is φ = 25412400.

The previous prime is 39901541. The next prime is 39901579. The reversal of 39901557 is 75510993.

39901557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39901557 - 2⁴ = 39901541 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 (39901517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4632 + ... + 10062.

It is an arithmetic number, because the mean of its divisors is an integer number (3476480).

Almost surely, 2^39901557 is an apocalyptic number.

It is an amenable number.

39901557 is a deficient number, since it is larger than the sum of its proper divisors (15722123).

39901557 is a wasteful number, since it uses less digits than its factorization.

39901557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5544.

The product of its (nonzero) digits is 42525, while the sum is 39.

The square root of 39901557 is about 6316.7679235508. The cubic root of 39901557 is about 341.7144002580.

The spelling of 39901557 in words is "thirty-nine million, nine hundred one thousand, five hundred fifty-seven".