39189087 has 12 divisors (see below), whose sum is σ = 64693200. Its totient is φ = 22393728.

The previous prime is 39189047. The next prime is 39189107. The reversal of 39189087 is 78098193.

It is not a de Polignac number, because 39189087 - 2⁷ = 39188959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39189047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 310962 + ... + 311087.

It is an arithmetic number, because the mean of its divisors is an integer number (5391100).

Almost surely, 2^39189087 is an apocalyptic number.

39189087 is a deficient number, since it is larger than the sum of its proper divisors (25504113).

39189087 is a wasteful number, since it uses less digits than its factorization.

39189087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622062 (or 622059 counting only the distinct ones).

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

The square root of 39189087 is about 6260.1187688414. The cubic root of 39189087 is about 339.6683241853.

The spelling of 39189087 in words is "thirty-nine million, one hundred eighty-nine thousand, eighty-seven".