46931987 has 4 divisors (see below), whose sum is σ = 46984416. Its totient is φ = 46879560.

The previous prime is 46931971. The next prime is 46931993. The reversal of 46931987 is 78913964.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 46931987 - 2⁴ = 46931971 is a prime.

It is a super-2 number, since 2×46931987² = 4405222807536338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (46933987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24848 + ... + 26669.

It is an arithmetic number, because the mean of its divisors is an integer number (11746104).

Almost surely, 2^46931987 is an apocalyptic number.

46931987 is a deficient number, since it is larger than the sum of its proper divisors (52429).

46931987 is an equidigital number, since it uses as much as digits as its factorization.

46931987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52428.

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

The square root of 46931987 is about 6850.6924467531. The cubic root of 46931987 is about 360.7084480297.

The spelling of 46931987 in words is "forty-six million, nine hundred thirty-one thousand, nine hundred eighty-seven".