79478039 has 8 divisors (see below), whose sum is σ = 80777088. Its totient is φ = 78184120.

The previous prime is 79478033. The next prime is 79478051. The reversal of 79478039 is 93087497.

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 79478039 - 2⁴ = 79478023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79477984 and 79478002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79478033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40724 + ... + 42630.

It is an arithmetic number, because the mean of its divisors is an integer number (10097136).

Almost surely, 2^79478039 is an apocalyptic number.

79478039 is a deficient number, since it is larger than the sum of its proper divisors (1299049).

79478039 is a wasteful number, since it uses less digits than its factorization.

79478039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2565.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 79478039 is about 8915.0456532763. The cubic root of 79478039 is about 429.9477834557.

The spelling of 79478039 in words is "seventy-nine million, four hundred seventy-eight thousand, thirty-nine".