900997 has 2 divisors, whose sum is σ = 900998. Its totient is φ = 900996.

The previous prime is 900973. The next prime is 901007. The reversal of 900997 is 799009.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 799236 + 101761 = 894^2 + 319^2 .

It is a cyclic number.

It is not a de Polignac number, because 900997 - 2⁷ = 900869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (900917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450498 + 450499.

It is an arithmetic number, because the mean of its divisors is an integer number (450499).

2⁹⁰⁰⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

900997 is a deficient number, since it is larger than the sum of its proper divisors (1).

900997 is an equidigital number, since it uses as much as digits as its factorization.

900997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103, while the sum is 34.

The square root of 900997 is about 949.2086177443. The cubic root of 900997 is about 96.5845768935.

The spelling of 900997 in words is "nine hundred thousand, nine hundred ninety-seven".