87429319 has 2 divisors, whose sum is σ = 87429320. Its totient is φ = 87429318.

The previous prime is 87429311. The next prime is 87429341. The reversal of 87429319 is 91392478.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87429319 - 2³ = 87429311 is a prime.

It is a super-2 number, since 2×87429319² = 15287771641607522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87429311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43714659 + 43714660.

It is an arithmetic number, because the mean of its divisors is an integer number (43714660).

Almost surely, 2^87429319 is an apocalyptic number.

87429319 is a deficient number, since it is larger than the sum of its proper divisors (1).

87429319 is an equidigital number, since it uses as much as digits as its factorization.

87429319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 87429319 is about 9350.3646452959. The cubic root of 87429319 is about 443.8324297311.

The spelling of 87429319 in words is "eighty-seven million, four hundred twenty-nine thousand, three hundred nineteen".