87953797 has 2 divisors, whose sum is σ = 87953798. Its totient is φ = 87953796.

The previous prime is 87953783. The next prime is 87953819. The reversal of 87953797 is 79735978.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83283876 + 4669921 = 9126^2 + 2161^2 .

It is a cyclic number.

It is not a de Polignac number, because 87953797 - 2⁷ = 87953669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87953737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43976898 + 43976899.

It is an arithmetic number, because the mean of its divisors is an integer number (43976899).

Almost surely, 2^87953797 is an apocalyptic number.

It is an amenable number.

87953797 is a deficient number, since it is larger than the sum of its proper divisors (1).

87953797 is an equidigital number, since it uses as much as digits as its factorization.

87953797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3333960, while the sum is 55.

The square root of 87953797 is about 9378.3685681466. The cubic root of 87953797 is about 444.7181601286.

The spelling of 87953797 in words is "eighty-seven million, nine hundred fifty-three thousand, seven hundred ninety-seven".