38649897 has 48 divisors (see below), whose sum is σ = 66830400. Its totient is φ = 21214080.

The previous prime is 38649883. The next prime is 38649899. The reversal of 38649897 is 79894683.

It is not a de Polignac number, because 38649897 - 2⁶ = 38649833 is a prime.

It is a super-2 number, since 2×38649897² = 2987629076221218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38649899) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75679 + ... + 76187.

It is an arithmetic number, because the mean of its divisors is an integer number (1392300).

Almost surely, 2^38649897 is an apocalyptic number.

It is an amenable number.

38649897 is a deficient number, since it is larger than the sum of its proper divisors (28180503).

38649897 is a wasteful number, since it uses less digits than its factorization.

38649897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598 (or 595 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 38649897 is about 6216.9041330875. The cubic root of 38649897 is about 338.1033290516.

The spelling of 38649897 in words is "thirty-eight million, six hundred forty-nine thousand, eight hundred ninety-seven".