87957407 has 2 divisors, whose sum is σ = 87957408. Its totient is φ = 87957406.

The previous prime is 87957391. The next prime is 87957409. The reversal of 87957407 is 70475978.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87957407 - 2⁴ = 87957391 is a prime.

Together with 87957409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87957409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43978703 + 43978704.

It is an arithmetic number, because the mean of its divisors is an integer number (43978704).

Almost surely, 2^87957407 is an apocalyptic number.

87957407 is a deficient number, since it is larger than the sum of its proper divisors (1).

87957407 is an equidigital number, since it uses as much as digits as its factorization.

87957407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 87957407 is about 9378.5610303500. The cubic root of 87957407 is about 444.7242444238.

The spelling of 87957407 in words is "eighty-seven million, nine hundred fifty-seven thousand, four hundred seven".