38649369 has 16 divisors (see below), whose sum is σ = 57415680. Its totient is φ = 22924560.

The previous prime is 38649353. The next prime is 38649371. The reversal of 38649369 is 96394683.

It is not a de Polignac number, because 38649369 - 2⁴ = 38649353 is a prime.

It is a super-2 number, since 2×38649369² = 2987547448196322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38649319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10909 + ... + 14010.

It is an arithmetic number, because the mean of its divisors is an integer number (3588480).

Almost surely, 2^38649369 is an apocalyptic number.

It is an amenable number.

38649369 is a deficient number, since it is larger than the sum of its proper divisors (18766311).

38649369 is a wasteful number, since it uses less digits than its factorization.

38649369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24980.

The product of its digits is 839808, while the sum is 48.

The square root of 38649369 is about 6216.8616680766. The cubic root of 38649369 is about 338.1017894238.

The spelling of 38649369 in words is "thirty-eight million, six hundred forty-nine thousand, three hundred sixty-nine".