40072597 has 4 divisors (see below), whose sum is σ = 40097356. Its totient is φ = 40047840.

The previous prime is 40072589. The next prime is 40072607. The reversal of 40072597 is 79527004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6791236 + 33281361 = 2606^2 + 5769^2 .

It is a cyclic number.

It is not a de Polignac number, because 40072597 - 2³ = 40072589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40072997) 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, 9768 + ... + 13249.

It is an arithmetic number, because the mean of its divisors is an integer number (10024339).

Almost surely, 2^40072597 is an apocalyptic number.

It is an amenable number.

40072597 is a deficient number, since it is larger than the sum of its proper divisors (24759).

40072597 is a wasteful number, since it uses less digits than its factorization.

40072597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24758.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 40072597 is about 6330.2920153813. The cubic root of 40072597 is about 342.2019628326.

The spelling of 40072597 in words is "forty million, seventy-two thousand, five hundred ninety-seven".