87974387 has 2 divisors, whose sum is σ = 87974388. Its totient is φ = 87974386.

The previous prime is 87974377. The next prime is 87974401. The reversal of 87974387 is 78347978.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87974387 - 2⁶ = 87974323 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87974317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43987193 + 43987194.

It is an arithmetic number, because the mean of its divisors is an integer number (43987194).

Almost surely, 2^87974387 is an apocalyptic number.

87974387 is a deficient number, since it is larger than the sum of its proper divisors (1).

87974387 is an equidigital number, since it uses as much as digits as its factorization.

87974387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2370816, while the sum is 53.

The square root of 87974387 is about 9379.4662428093. The cubic root of 87974387 is about 444.7528602885.

The spelling of 87974387 in words is "eighty-seven million, nine hundred seventy-four thousand, three hundred eighty-seven".