979768406 has 4 divisors (see below), whose sum is σ = 1469652612. Its totient is φ = 489884202.

The previous prime is 979768381. The next prime is 979768411. The reversal of 979768406 is 604867979.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×979768406² = 1919892258791561672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244942100 + ... + 244942103.

It is an arithmetic number, because the mean of its divisors is an integer number (367413153).

Almost surely, 2^979768406 is an apocalyptic number.

979768406 is a deficient number, since it is larger than the sum of its proper divisors (489884206).

979768406 is a wasteful number, since it uses less digits than its factorization.

979768406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489884205.

The product of its (nonzero) digits is 4572288, while the sum is 56.

The square root of 979768406 is about 31301.2524669541. The cubic root of 979768406 is about 993.2101374424.

The spelling of 979768406 in words is "nine hundred seventy-nine million, seven hundred sixty-eight thousand, four hundred six".