79621274 has 4 divisors (see below), whose sum is σ = 119431914. Its totient is φ = 39810636.

The previous prime is 79621273. The next prime is 79621277. The reversal of 79621274 is 47212697.

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

It can be written as a sum of positive squares in only one way, i.e., 48205249 + 31416025 = 6943^2 + 5605^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79621271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19905317 + ... + 19905320.

Almost surely, 2^79621274 is an apocalyptic number.

79621274 is a deficient number, since it is larger than the sum of its proper divisors (39810640).

79621274 is a wasteful number, since it uses less digits than its factorization.

79621274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39810639.

The product of its digits is 42336, while the sum is 38.

The square root of 79621274 is about 8923.0753667107. The cubic root of 79621274 is about 430.2059118364.

The spelling of 79621274 in words is "seventy-nine million, six hundred twenty-one thousand, two hundred seventy-four".