87376919 has 4 divisors (see below), whose sum is σ = 99859344. Its totient is φ = 74894496.

The previous prime is 87376847. The next prime is 87376951. The reversal of 87376919 is 91967378.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91967378 = 2 ⋅45983689.

It is a cyclic number.

It is not a de Polignac number, because 87376919 - 2¹² = 87372823 is a prime.

It is a super-2 number, since 2×87376919² = 15269451947865122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87376969) 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, 6241202 + ... + 6241215.

It is an arithmetic number, because the mean of its divisors is an integer number (24964836).

Almost surely, 2^87376919 is an apocalyptic number.

87376919 is a deficient number, since it is larger than the sum of its proper divisors (12482425).

87376919 is a wasteful number, since it uses less digits than its factorization.

87376919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12482424.

The product of its digits is 571536, while the sum is 50.

The square root of 87376919 is about 9347.5621955674. The cubic root of 87376919 is about 443.7437429786.

The spelling of 87376919 in words is "eighty-seven million, three hundred seventy-six thousand, nine hundred nineteen".