900858997 has 2 divisors, whose sum is σ = 900858998. Its totient is φ = 900858996.

The previous prime is 900858991. The next prime is 900859007. The reversal of 900858997 is 799858009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 469632241 + 431226756 = 21671^2 + 20766^2 .

It is a cyclic number.

It is not a de Polignac number, because 900858997 - 2¹⁵ = 900826229 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (900858991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450429498 + 450429499.

It is an arithmetic number, because the mean of its divisors is an integer number (450429499).

Almost surely, 2^900858997 is an apocalyptic number.

It is an amenable number.

900858997 is a deficient number, since it is larger than the sum of its proper divisors (1).

900858997 is an equidigital number, since it uses as much as digits as its factorization.

900858997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 55.

The square root of 900858997 is about 30014.3132022040. The cubic root of 900858997 is about 965.7964545200.

The spelling of 900858997 in words is "nine hundred million, eight hundred fifty-eight thousand, nine hundred ninety-seven".