40972559 has 2 divisors, whose sum is σ = 40972560. Its totient is φ = 40972558.

The previous prime is 40972543. The next prime is 40972619. The reversal of 40972559 is 95527904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40972559 - 2⁴ = 40972543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40972859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20486279 + 20486280.

It is an arithmetic number, because the mean of its divisors is an integer number (20486280).

Almost surely, 2^40972559 is an apocalyptic number.

40972559 is a deficient number, since it is larger than the sum of its proper divisors (1).

40972559 is an equidigital number, since it uses as much as digits as its factorization.

40972559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 40972559 is about 6400.9810966757. The cubic root of 40972559 is about 344.7447779836.

The spelling of 40972559 in words is "forty million, nine hundred seventy-two thousand, five hundred fifty-nine".