869900953 has 2 divisors, whose sum is σ = 869900954. Its totient is φ = 869900952.

The previous prime is 869900909. The next prime is 869901037. The reversal of 869900953 is 359009968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 824378944 + 45522009 = 28712^2 + 6747^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-869900953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 869900897 and 869900906.

It is not a weakly prime, because it can be changed into another prime (869900903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434950476 + 434950477.

It is an arithmetic number, because the mean of its divisors is an integer number (434950477).

Almost surely, 2^869900953 is an apocalyptic number.

It is an amenable number.

869900953 is a deficient number, since it is larger than the sum of its proper divisors (1).

869900953 is an equidigital number, since it uses as much as digits as its factorization.

869900953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 869900953 is about 29494.0833558190. The cubic root of 869900953 is about 954.6040418772.

The spelling of 869900953 in words is "eight hundred sixty-nine million, nine hundred thousand, nine hundred fifty-three".