890940979 has 2 divisors, whose sum is σ = 890940980. Its totient is φ = 890940978.

The previous prime is 890940923. The next prime is 890941013. The reversal of 890940979 is 979049098.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 890940979 - 2⁷ = 890940851 is a prime.

It is a super-2 number, since 2×890940979² = 1587551656122956882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (890940679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445470489 + 445470490.

It is an arithmetic number, because the mean of its divisors is an integer number (445470490).

Almost surely, 2^890940979 is an apocalyptic number.

890940979 is a deficient number, since it is larger than the sum of its proper divisors (1).

890940979 is an equidigital number, since it uses as much as digits as its factorization.

890940979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The square root of 890940979 is about 29848.6344578776. The cubic root of 890940979 is about 962.2390514046.

The spelling of 890940979 in words is "eight hundred ninety million, nine hundred forty thousand, nine hundred seventy-nine".