900978 has 16 divisors (see below), whose sum is σ = 1940736. Its totient is φ = 277200.

The previous prime is 900973. The next prime is 900997. The reversal of 900978 is 879009.

It is a super-2 number, since 2×900978² = 1623522712968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (900971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5698 + ... + 5853.

It is an arithmetic number, because the mean of its divisors is an integer number (121296).

2⁹⁰⁰⁹⁷⁸ is an apocalyptic number.

900978 is an abundant number, since it is smaller than the sum of its proper divisors (1039758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

900978 is a wasteful number, since it uses less digits than its factorization.

900978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11569.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 900978 is about 949.1986093542. The cubic root of 900978 is about 96.5838979715.

The spelling of 900978 in words is "nine hundred thousand, nine hundred seventy-eight".