87290079 has 16 divisors (see below), whose sum is σ = 121943040. Its totient is φ = 55471680.

The previous prime is 87290069. The next prime is 87290089. The reversal of 87290079 is 97009278.

It is an interprime number because it is at equal distance from previous prime (87290069) and next prime (87290089).

It is not a de Polignac number, because 87290079 - 2⁹ = 87289567 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87290079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87290059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 774 + ... + 13235.

It is an arithmetic number, because the mean of its divisors is an integer number (7621440).

Almost surely, 2^87290079 is an apocalyptic number.

87290079 is a deficient number, since it is larger than the sum of its proper divisors (34652961).

87290079 is a wasteful number, since it uses less digits than its factorization.

87290079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14110.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 87290079 is about 9342.9159795002. The cubic root of 87290079 is about 443.5966885844.

It can be divided in two parts, 872 and 90079, that added together give a triangular number (90951 = T₄₂₆).

The spelling of 87290079 in words is "eighty-seven million, two hundred ninety thousand, seventy-nine".