83190987 has 48 divisors (see below), whose sum is σ = 141073920. Its totient is φ = 46699200.

The previous prime is 83190967. The next prime is 83190997. The reversal of 83190987 is 78909138.

It is not a de Polignac number, because 83190987 - 2⁷ = 83190859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83190907) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 87937 + ... + 88877.

It is an arithmetic number, because the mean of its divisors is an integer number (2939040).

Almost surely, 2^83190987 is an apocalyptic number.

83190987 is a deficient number, since it is larger than the sum of its proper divisors (57882933).

83190987 is a wasteful number, since it uses less digits than its factorization.

83190987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024 (or 1021 counting only the distinct ones).

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

The square root of 83190987 is about 9120.9093296666. The cubic root of 83190987 is about 436.5413886743.

The spelling of 83190987 in words is "eighty-three million, one hundred ninety thousand, nine hundred eighty-seven".