40372073 has 4 divisors (see below), whose sum is σ = 46139520. Its totient is φ = 34604628.

The previous prime is 40372067. The next prime is 40372097. The reversal of 40372073 is 37027304.

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.

It is a cyclic number.

It is not a de Polignac number, because 40372073 - 2⁶ = 40372009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40372573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2883713 + ... + 2883726.

It is an arithmetic number, because the mean of its divisors is an integer number (11534880).

Almost surely, 2^40372073 is an apocalyptic number.

It is an amenable number.

40372073 is a deficient number, since it is larger than the sum of its proper divisors (5767447).

40372073 is an equidigital number, since it uses as much as digits as its factorization.

40372073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5767446.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 40372073 is about 6353.9021868455. The cubic root of 40372073 is about 343.0523114915.

Adding to 40372073 its reverse (37027304), we get a palindrome (77399377).

The spelling of 40372073 in words is "forty million, three hundred seventy-two thousand, seventy-three".