739978 has 8 divisors (see below), whose sum is σ = 1128960. Its totient is φ = 363660.

The previous prime is 739969. The next prime is 740011. The reversal of 739978 is 879937.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

739978 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3018 + ... + 3253.

It is an arithmetic number, because the mean of its divisors is an integer number (141120).

2⁷³⁹⁹⁷⁸ is an apocalyptic number.

739978 is a deficient number, since it is larger than the sum of its proper divisors (388982).

739978 is a wasteful number, since it uses less digits than its factorization.

739978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6332.

The product of its digits is 95256, while the sum is 43.

The square root of 739978 is about 860.2197393690. The cubic root of 739978 is about 90.4495206007.

The spelling of 739978 in words is "seven hundred thirty-nine thousand, nine hundred seventy-eight".