978339724 has 12 divisors (see below), whose sum is σ = 1714185648. Its totient is φ = 488572400.

The previous prime is 978339701. The next prime is 978339727. The reversal of 978339724 is 427933879.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (978339727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145672 + ... + 152239.

It is an arithmetic number, because the mean of its divisors is an integer number (142848804).

Almost surely, 2^978339724 is an apocalyptic number.

It is an amenable number.

978339724 is a deficient number, since it is larger than the sum of its proper divisors (735845924).

978339724 is a wasteful number, since it uses less digits than its factorization.

978339724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298736 (or 298734 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 52.

The square root of 978339724 is about 31278.4226584398. The cubic root of 978339724 is about 992.7271417644.

The spelling of 978339724 in words is "nine hundred seventy-eight million, three hundred thirty-nine thousand, seven hundred twenty-four".