38649039 has 32 divisors (see below), whose sum is σ = 63189504. Its totient is φ = 20676480.

The previous prime is 38649029. The next prime is 38649043. The reversal of 38649039 is 93094683.

It is not a de Polignac number, because 38649039 - 2¹¹ = 38646991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38649029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7909 + ... + 11825.

It is an arithmetic number, because the mean of its divisors is an integer number (1974672).

Almost surely, 2^38649039 is an apocalyptic number.

38649039 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

38649039 is a deficient number, since it is larger than the sum of its proper divisors (24540465).

38649039 is a wasteful number, since it uses less digits than its factorization.

38649039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 38649039 is about 6216.8351272975. The cubic root of 38649039 is about 338.1008271493.

The spelling of 38649039 in words is "thirty-eight million, six hundred forty-nine thousand, thirty-nine".