87931946 has 16 divisors (see below), whose sum is σ = 133056000. Its totient is φ = 43582128.

The previous prime is 87931853. The next prime is 87931951. The reversal of 87931946 is 64913978.

It is a self number, because there is not a number n which added to its sum of digits gives 87931946.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183335 + ... + 183813.

It is an arithmetic number, because the mean of its divisors is an integer number (8316000).

Almost surely, 2^87931946 is an apocalyptic number.

87931946 is a deficient number, since it is larger than the sum of its proper divisors (45124054).

87931946 is a wasteful number, since it uses less digits than its factorization.

87931946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093.

The product of its digits is 326592, while the sum is 47.

The square root of 87931946 is about 9377.2035277048. The cubic root of 87931946 is about 444.6813288918.

The spelling of 87931946 in words is "eighty-seven million, nine hundred thirty-one thousand, nine hundred forty-six".