900122493 has 4 divisors (see below), whose sum is σ = 1200163328. Its totient is φ = 600081660.

The previous prime is 900122449. The next prime is 900122501. The reversal of 900122493 is 394221009.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 900122493 - 2²⁴ = 883345277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 900122493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900127493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150020413 + ... + 150020418.

It is an arithmetic number, because the mean of its divisors is an integer number (300040832).

Almost surely, 2^900122493 is an apocalyptic number.

It is an amenable number.

900122493 is a deficient number, since it is larger than the sum of its proper divisors (300040835).

900122493 is a wasteful number, since it uses less digits than its factorization.

900122493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300040834.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 900122493 is about 30002.0414805393. The cubic root of 900122493 is about 965.5331847264.

The spelling of 900122493 in words is "nine hundred million, one hundred twenty-two thousand, four hundred ninety-three".