38997499 has 4 divisors (see below), whose sum is σ = 39078064. Its totient is φ = 38916936.

The previous prime is 38997493. The next prime is 38997503. The reversal of 38997499 is 99479983.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38997499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38997493) 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, 39552 + ... + 40525.

It is an arithmetic number, because the mean of its divisors is an integer number (9769516).

Almost surely, 2^38997499 is an apocalyptic number.

38997499 is a deficient number, since it is larger than the sum of its proper divisors (80565).

38997499 is an equidigital number, since it uses as much as digits as its factorization.

38997499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80564.

The product of its digits is 4408992, while the sum is 58.

The square root of 38997499 is about 6244.7977549317. The cubic root of 38997499 is about 339.1138950697.

The spelling of 38997499 in words is "thirty-eight million, nine hundred ninety-seven thousand, four hundred ninety-nine".