38869649 has 16 divisors (see below), whose sum is σ = 50359680. Its totient is φ = 29134080.

The previous prime is 38869643. The next prime is 38869651. The reversal of 38869649 is 94696883.

It is a cyclic number.

It is not a de Polignac number, because 38869649 - 2⁸ = 38869393 is a prime.

It is a super-2 number, since 2×38869649² = 3021699226766402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38869649.

It is not an unprimeable number, because it can be changed into a prime (38869643) 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, 9512 + ... + 12969.

It is an arithmetic number, because the mean of its divisors is an integer number (3147480).

Almost surely, 2^38869649 is an apocalyptic number.

It is an amenable number.

38869649 is a deficient number, since it is larger than the sum of its proper divisors (11490031).

38869649 is a wasteful number, since it uses less digits than its factorization.

38869649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22520.

The product of its digits is 2239488, while the sum is 53.

The square root of 38869649 is about 6234.5528307971. The cubic root of 38869649 is about 338.7429039512.

The spelling of 38869649 in words is "thirty-eight million, eight hundred sixty-nine thousand, six hundred forty-nine".