40072559 has 2 divisors, whose sum is σ = 40072560. Its totient is φ = 40072558.

The previous prime is 40072493. The next prime is 40072561. The reversal of 40072559 is 95527004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40072559 - 2¹² = 40068463 is a prime.

Together with 40072561, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_2437763 and since 40072559 and 2437763 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40072579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20036279 + 20036280.

It is an arithmetic number, because the mean of its divisors is an integer number (20036280).

Almost surely, 2^40072559 is an apocalyptic number.

40072559 is a deficient number, since it is larger than the sum of its proper divisors (1).

40072559 is an equidigital number, since it uses as much as digits as its factorization.

40072559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 40072559 is about 6330.2890139393. The cubic root of 40072559 is about 342.2018546649.

The spelling of 40072559 in words is "forty million, seventy-two thousand, five hundred fifty-nine".