38972599 has 2 divisors, whose sum is σ = 38972600. Its totient is φ = 38972598.

The previous prime is 38972597. The next prime is 38972621. The reversal of 38972599 is 99527983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38972599 - 2¹ = 38972597 is a prime.

Together with 38972597, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38972597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19486299 + 19486300.

It is an arithmetic number, because the mean of its divisors is an integer number (19486300).

Almost surely, 2^38972599 is an apocalyptic number.

38972599 is a deficient number, since it is larger than the sum of its proper divisors (1).

38972599 is an equidigital number, since it uses as much as digits as its factorization.

38972599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 52.

The square root of 38972599 is about 6242.8037771501. The cubic root of 38972599 is about 339.0417046814.

The spelling of 38972599 in words is "thirty-eight million, nine hundred seventy-two thousand, five hundred ninety-nine".