978925759 has 4 divisors (see below), whose sum is σ = 1118772304. Its totient is φ = 839079216.

The previous prime is 978925697. The next prime is 978925763. The reversal of 978925759 is 957529879.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 957529879 = 17 ⋅56325287.

It is a cyclic number.

It is not a de Polignac number, because 978925759 - 2¹³ = 978917567 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 978925697 and 978925706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978925789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69923262 + ... + 69923275.

It is an arithmetic number, because the mean of its divisors is an integer number (279693076).

Almost surely, 2^978925759 is an apocalyptic number.

978925759 is a deficient number, since it is larger than the sum of its proper divisors (139846545).

978925759 is a wasteful number, since it uses less digits than its factorization.

978925759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139846544.

The product of its digits is 14288400, while the sum is 61.

The square root of 978925759 is about 31287.7892955063. The cubic root of 978925759 is about 992.9253199338.

The spelling of 978925759 in words is "nine hundred seventy-eight million, nine hundred twenty-five thousand, seven hundred fifty-nine".