87790079 has 8 divisors (see below), whose sum is σ = 94616592. Its totient is φ = 80974080.

The previous prime is 87790069. The next prime is 87790121. The reversal of 87790079 is 97009778.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87790079 - 2¹² = 87785983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87790049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28064 + ... + 31034.

It is an arithmetic number, because the mean of its divisors is an integer number (11827074).

Almost surely, 2^87790079 is an apocalyptic number.

87790079 is a deficient number, since it is larger than the sum of its proper divisors (6826513).

87790079 is a wasteful number, since it uses less digits than its factorization.

87790079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5257.

The product of its (nonzero) digits is 222264, while the sum is 47.

The square root of 87790079 is about 9369.6360121405. The cubic root of 87790079 is about 444.4420545959.

The spelling of 87790079 in words is "eighty-seven million, seven hundred ninety thousand, seventy-nine".