75972394 has 4 divisors (see below), whose sum is σ = 113958594. Its totient is φ = 37986196.

The previous prime is 75972383. The next prime is 75972401. The reversal of 75972394 is 49327957.

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., 75429225 + 543169 = 8685^2 + 737^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18993097 + ... + 18993100.

Almost surely, 2^75972394 is an apocalyptic number.

75972394 is a deficient number, since it is larger than the sum of its proper divisors (37986200).

75972394 is a wasteful number, since it uses less digits than its factorization.

75972394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37986199.

The product of its digits is 476280, while the sum is 46.

The square root of 75972394 is about 8716.2144305885. The cubic root of 75972394 is about 423.5310653084.

It can be divided in two parts, 759 and 72394, that added together give a triangular number (73153 = T₃₈₂).

The spelling of 75972394 in words is "seventy-five million, nine hundred seventy-two thousand, three hundred ninety-four".