972878351 has 4 divisors (see below), whose sum is σ = 973384104. Its totient is φ = 972372600.

The previous prime is 972878339. The next prime is 972878371. The reversal of 972878351 is 153878279.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 153878279 = 919 ⋅167441.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-972878351 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 972878351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972878371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249980 + ... + 253841.

It is an arithmetic number, because the mean of its divisors is an integer number (243346026).

Almost surely, 2^972878351 is an apocalyptic number.

972878351 is a deficient number, since it is larger than the sum of its proper divisors (505753).

972878351 is a wasteful number, since it uses less digits than its factorization.

972878351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505752.

The product of its digits is 846720, while the sum is 50.

The square root of 972878351 is about 31190.9979160655. The cubic root of 972878351 is about 990.8764645791.

The spelling of 972878351 in words is "nine hundred seventy-two million, eight hundred seventy-eight thousand, three hundred fifty-one".