79938461 has 4 divisors (see below), whose sum is σ = 80235900. Its totient is φ = 79641024.

The previous prime is 79938457. The next prime is 79938473. The reversal of 79938461 is 16483997.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48511225 + 31427236 = 6965^2 + 5606^2 .

It is a cyclic number.

It is not a de Polignac number, because 79938461 - 2² = 79938457 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79938401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148316 + ... + 148853.

It is an arithmetic number, because the mean of its divisors is an integer number (20058975).

Almost surely, 2^79938461 is an apocalyptic number.

It is an amenable number.

79938461 is a deficient number, since it is larger than the sum of its proper divisors (297439).

79938461 is a wasteful number, since it uses less digits than its factorization.

79938461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297438.

The product of its digits is 326592, while the sum is 47.

The square root of 79938461 is about 8940.8311134927. The cubic root of 79938461 is about 430.7764248676.

The spelling of 79938461 in words is "seventy-nine million, nine hundred thirty-eight thousand, four hundred sixty-one".