87976739 has 4 divisors (see below), whose sum is σ = 89215920. Its totient is φ = 86737560.

The previous prime is 87976727. The next prime is 87976741. The reversal of 87976739 is 93767978.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87976739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87976709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619484 + ... + 619625.

It is an arithmetic number, because the mean of its divisors is an integer number (22303980).

Almost surely, 2^87976739 is an apocalyptic number.

87976739 is a deficient number, since it is larger than the sum of its proper divisors (1239181).

87976739 is a wasteful number, since it uses less digits than its factorization.

87976739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239180.

The product of its digits is 4000752, while the sum is 56.

The square root of 87976739 is about 9379.5916222403. The cubic root of 87976739 is about 444.7568237505.

The spelling of 87976739 in words is "eighty-seven million, nine hundred seventy-six thousand, seven hundred thirty-nine".