979954981 has 8 divisors (see below), whose sum is σ = 1036240128. Its totient is φ = 925212000.

The previous prime is 979954973. The next prime is 979954999. The reversal of 979954981 is 189459979.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 979954981 - 2³ = 979954973 is a prime.

It is a super-2 number, since 2×979954981² = 1920623529573420722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979954901) 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, 384235 + ... + 386776.

It is an arithmetic number, because the mean of its divisors is an integer number (129530016).

Almost surely, 2^979954981 is an apocalyptic number.

It is an amenable number.

979954981 is a deficient number, since it is larger than the sum of its proper divisors (56285147).

979954981 is a wasteful number, since it uses less digits than its factorization.

979954981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771083.

The product of its digits is 7348320, while the sum is 61.

The square root of 979954981 is about 31304.2326371371. The cubic root of 979954981 is about 993.2731783335.

The spelling of 979954981 in words is "nine hundred seventy-nine million, nine hundred fifty-four thousand, nine hundred eighty-one".