981953279 has 8 divisors (see below), whose sum is σ = 985315200. Its totient is φ = 978598296.

The previous prime is 981953267. The next prime is 981953293. The reversal of 981953279 is 972359189.

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 981953279 - 2⁴ = 981953263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 981953279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981958279) 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, 470372 + ... + 472454.

It is an arithmetic number, because the mean of its divisors is an integer number (123164400).

Almost surely, 2^981953279 is an apocalyptic number.

981953279 is a deficient number, since it is larger than the sum of its proper divisors (3361921).

981953279 is a wasteful number, since it uses less digits than its factorization.

981953279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3469.

The product of its digits is 1224720, while the sum is 53.

The square root of 981953279 is about 31336.1337596073. The cubic root of 981953279 is about 993.9478719726.

The spelling of 981953279 in words is "nine hundred eighty-one million, nine hundred fifty-three thousand, two hundred seventy-nine".