87469957 has 2 divisors, whose sum is σ = 87469958. Its totient is φ = 87469956.

The previous prime is 87469951. The next prime is 87469973. The reversal of 87469957 is 75996478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60699681 + 26770276 = 7791^2 + 5174^2 .

It is a cyclic number.

It is not a de Polignac number, because 87469957 - 2²³ = 79081349 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 87469898 and 87469907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87469951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43734978 + 43734979.

It is an arithmetic number, because the mean of its divisors is an integer number (43734979).

Almost surely, 2^87469957 is an apocalyptic number.

It is an amenable number.

87469957 is a deficient number, since it is larger than the sum of its proper divisors (1).

87469957 is an equidigital number, since it uses as much as digits as its factorization.

87469957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 55.

The square root of 87469957 is about 9352.5374631701. The cubic root of 87469957 is about 443.9011849599.

The spelling of 87469957 in words is "eighty-seven million, four hundred sixty-nine thousand, nine hundred fifty-seven".