978763408 has 40 divisors (see below), whose sum is σ = 2179414080. Its totient is φ = 417118080.

The previous prime is 978763393. The next prime is 978763411. The reversal of 978763408 is 804367879.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4363 + ... + 44458.

It is an arithmetic number, because the mean of its divisors is an integer number (54485352).

Almost surely, 2^978763408 is an apocalyptic number.

It is an amenable number.

978763408 is an abundant number, since it is smaller than the sum of its proper divisors (1200650672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

978763408 is a wasteful number, since it uses less digits than its factorization.

978763408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49015 (or 49009 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 52.

The square root of 978763408 is about 31285.1947093190. The cubic root of 978763408 is about 992.8704259749.

The spelling of 978763408 in words is "nine hundred seventy-eight million, seven hundred sixty-three thousand, four hundred eight".