890158977 has 10 divisors (see below), whose sum is σ = 1329743778. Its totient is φ = 593439264.

The previous prime is 890158961. The next prime is 890159003. The reversal of 890158977 is 779851098.

It can be written as a sum of positive squares in only one way, i.e., 887980401 + 2178576 = 29799^2 + 1476^2 .

It is not a de Polignac number, because 890158977 - 2⁴ = 890158961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (890158957) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5494728 + ... + 5494889.

Almost surely, 2^890158977 is an apocalyptic number.

It is an amenable number.

890158977 is a deficient number, since it is larger than the sum of its proper divisors (439584801).

890158977 is a wasteful number, since it uses less digits than its factorization.

890158977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10989629 (or 10989620 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The square root of 890158977 is about 29835.5321219515. The cubic root of 890158977 is about 961.9574416075.

The spelling of 890158977 in words is "eight hundred ninety million, one hundred fifty-eight thousand, nine hundred seventy-seven".