38979865 has 8 divisors (see below), whose sum is σ = 48284928. Its totient is φ = 30177840.

The previous prime is 38979859. The next prime is 38979869. The reversal of 38979865 is 56897983.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38979865 - 2¹⁹ = 38455577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38979869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125587 + ... + 125896.

It is an arithmetic number, because the mean of its divisors is an integer number (6035616).

Almost surely, 2^38979865 is an apocalyptic number.

It is an amenable number.

38979865 is a deficient number, since it is larger than the sum of its proper divisors (9305063).

38979865 is a wasteful number, since it uses less digits than its factorization.

38979865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251519.

The product of its digits is 3265920, while the sum is 55.

The square root of 38979865 is about 6243.3857000829. The cubic root of 38979865 is about 339.0627735350.

The spelling of 38979865 in words is "thirty-eight million, nine hundred seventy-nine thousand, eight hundred sixty-five".