87469973 has 2 divisors, whose sum is σ = 87469974. Its totient is φ = 87469972.

The previous prime is 87469957. The next prime is 87469997. The reversal of 87469973 is 37996478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75030244 + 12439729 = 8662^2 + 3527^2 .

It is a cyclic number.

It is not a de Polignac number, because 87469973 - 2⁴ = 87469957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87469903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43734986 + 43734987.

It is an arithmetic number, because the mean of its divisors is an integer number (43734987).

Almost surely, 2^87469973 is an apocalyptic number.

It is an amenable number.

87469973 is a deficient number, since it is larger than the sum of its proper divisors (1).

87469973 is an equidigital number, since it uses as much as digits as its factorization.

87469973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 53.

The square root of 87469973 is about 9352.5383185529. The cubic root of 87469973 is about 443.9012120260.

The spelling of 87469973 in words is "eighty-seven million, four hundred sixty-nine thousand, nine hundred seventy-three".