40091372 has 12 divisors (see below), whose sum is σ = 74287080. Its totient is φ = 18866496.

The previous prime is 40091347. The next prime is 40091377. The reversal of 40091372 is 27319004.

It is not an unprimeable number, because it can be changed into a prime (40091377) 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, 294722 + ... + 294857.

It is an arithmetic number, because the mean of its divisors is an integer number (6190590).

Almost surely, 2^40091372 is an apocalyptic number.

It is an amenable number.

40091372 is a deficient number, since it is larger than the sum of its proper divisors (34195708).

40091372 is a wasteful number, since it uses less digits than its factorization.

40091372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589600 (or 589598 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 40091372 is about 6331.7747906886. The cubic root of 40091372 is about 342.2553978414.

The spelling of 40091372 in words is "forty million, ninety-one thousand, three hundred seventy-two".