39901887 has 12 divisors (see below), whose sum is σ = 57712824. Its totient is φ = 26565840.

The previous prime is 39901861. The next prime is 39901889. The reversal of 39901887 is 78810993.

It is not a de Polignac number, because 39901887 - 2¹⁰ = 39900863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39901889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5437 + ... + 10457.

It is an arithmetic number, because the mean of its divisors is an integer number (4809402).

Almost surely, 2^39901887 is an apocalyptic number.

39901887 is a deficient number, since it is larger than the sum of its proper divisors (17810937).

39901887 is a wasteful number, since it uses less digits than its factorization.

39901887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5910 (or 5907 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 39901887 is about 6316.7940444501. The cubic root of 39901887 is about 341.7153422884.

The spelling of 39901887 in words is "thirty-nine million, nine hundred one thousand, eight hundred eighty-seven".