38988919 has 4 divisors (see below), whose sum is σ = 39045240. Its totient is φ = 38932600.

The previous prime is 38988889. The next prime is 38988923. The reversal of 38988919 is 91988983.

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

It is a cyclic number.

It is not a de Polignac number, because 38988919 - 2⁹ = 38988407 is a prime.

It is a super-2 number, since 2×38988919² = 3040271609577122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38988919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38988959) 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, 27109 + ... + 28510.

It is an arithmetic number, because the mean of its divisors is an integer number (9761310).

Almost surely, 2^38988919 is an apocalyptic number.

38988919 is a deficient number, since it is larger than the sum of its proper divisors (56321).

38988919 is an equidigital number, since it uses as much as digits as its factorization.

38988919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56320.

The product of its digits is 1119744, while the sum is 55.

The square root of 38988919 is about 6244.1107453344. The cubic root of 38988919 is about 339.0890232984.

The spelling of 38988919 in words is "thirty-eight million, nine hundred eighty-eight thousand, nine hundred nineteen".