79400273 has 4 divisors (see below), whose sum is σ = 80025600. Its totient is φ = 78774948.

The previous prime is 79400267. The next prime is 79400281. The reversal of 79400273 is 37200497.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37200497 = 191 ⋅194767.

It is a cyclic number.

It is not a de Polignac number, because 79400273 - 2⁴ = 79400257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79400473) 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, 312473 + ... + 312726.

It is an arithmetic number, because the mean of its divisors is an integer number (20006400).

Almost surely, 2^79400273 is an apocalyptic number.

It is an amenable number.

79400273 is a deficient number, since it is larger than the sum of its proper divisors (625327).

79400273 is a wasteful number, since it uses less digits than its factorization.

79400273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625326.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 79400273 is about 8910.6830826823. The cubic root of 79400273 is about 429.8075089400.

The spelling of 79400273 in words is "seventy-nine million, four hundred thousand, two hundred seventy-three".