978932403 has 24 divisors (see below), whose sum is σ = 1529057088. Its totient is φ = 601158912.

The previous prime is 978932401. The next prime is 978932413. The reversal of 978932403 is 304239879.

It is a happy number.

It is not a de Polignac number, because 978932403 - 2¹ = 978932401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (978932401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60876 + ... + 75257.

It is an arithmetic number, because the mean of its divisors is an integer number (63710712).

Almost surely, 2^978932403 is an apocalyptic number.

978932403 is a deficient number, since it is larger than the sum of its proper divisors (550124685).

978932403 is a wasteful number, since it uses less digits than its factorization.

978932403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136203 (or 136200 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 978932403 is about 31287.8954709325. The cubic root of 978932403 is about 992.9275662672.

The spelling of 978932403 in words is "nine hundred seventy-eight million, nine hundred thirty-two thousand, four hundred three".