72194359 has 4 divisors (see below), whose sum is σ = 76441104. Its totient is φ = 67947616.

The previous prime is 72194329. The next prime is 72194407. The reversal of 72194359 is 95349127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95349127 = 251 ⋅379877.

It is a cyclic number.

It is not a de Polignac number, because 72194359 - 2⁵ = 72194327 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72194329) 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, 2123347 + ... + 2123380.

It is an arithmetic number, because the mean of its divisors is an integer number (19110276).

Almost surely, 2^72194359 is an apocalyptic number.

72194359 is a deficient number, since it is larger than the sum of its proper divisors (4246745).

72194359 is a wasteful number, since it uses less digits than its factorization.

72194359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4246744.

The product of its digits is 68040, while the sum is 40.

The square root of 72194359 is about 8496.7263696085. The cubic root of 72194359 is about 416.3907644052.

The spelling of 72194359 in words is "seventy-two million, one hundred ninety-four thousand, three hundred fifty-nine".