87930319 has 2 divisors, whose sum is σ = 87930320. Its totient is φ = 87930318.

The previous prime is 87930263. The next prime is 87930329. The reversal of 87930319 is 91303978.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87930319 - 2¹¹ = 87928271 is a prime.

It is a super-2 number, since 2×87930319² = 15463481998883522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87930329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43965159 + 43965160.

It is an arithmetic number, because the mean of its divisors is an integer number (43965160).

Almost surely, 2^87930319 is an apocalyptic number.

87930319 is a deficient number, since it is larger than the sum of its proper divisors (1).

87930319 is an equidigital number, since it uses as much as digits as its factorization.

87930319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 87930319 is about 9377.1167743609. The cubic root of 87930319 is about 444.6785862368.

The spelling of 87930319 in words is "eighty-seven million, nine hundred thirty thousand, three hundred nineteen".