978435964 has 24 divisors (see below), whose sum is σ = 1870441776. Its totient is φ = 444144000.

The previous prime is 978435949. The next prime is 978435967. The reversal of 978435964 is 469534879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978435967) 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 7 ways as a sum of consecutive naturals, for example, 18874 + ... + 48094.

It is an arithmetic number, because the mean of its divisors is an integer number (77935074).

Almost surely, 2^978435964 is an apocalyptic number.

It is an amenable number.

978435964 is a deficient number, since it is larger than the sum of its proper divisors (892005812).

978435964 is a wasteful number, since it uses less digits than its factorization.

978435964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29997 (or 29995 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 55.

The square root of 978435964 is about 31279.9610613568. The cubic root of 978435964 is about 992.7596924640.

The spelling of 978435964 in words is "nine hundred seventy-eight million, four hundred thirty-five thousand, nine hundred sixty-four".