76478939 has 8 divisors (see below), whose sum is σ = 77906640. Its totient is φ = 75063456.

The previous prime is 76478929. The next prime is 76478951. The reversal of 76478939 is 93987467.

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

It is a cyclic number.

It is not a de Polignac number, because 76478939 - 2⁴ = 76478923 is a prime.

It is a super-2 number, since 2×76478939² = 11698056221131442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76478929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10097 + ... + 15965.

It is an arithmetic number, because the mean of its divisors is an integer number (9738330).

Almost surely, 2^76478939 is an apocalyptic number.

76478939 is a deficient number, since it is larger than the sum of its proper divisors (1427701).

76478939 is a wasteful number, since it uses less digits than its factorization.

76478939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6109.

The product of its digits is 2286144, while the sum is 53.

The square root of 76478939 is about 8745.2237821567. The cubic root of 76478939 is about 424.4702770482.

The spelling of 76478939 in words is "seventy-six million, four hundred seventy-eight thousand, nine hundred thirty-nine".