39138651 has 12 divisors (see below), whose sum is σ = 59509320. Its totient is φ = 24719040.

The previous prime is 39138629. The next prime is 39138667. The reversal of 39138651 is 15683193.

It is a happy number.

It is not a de Polignac number, because 39138651 - 2⁶ = 39138587 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39133651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114270 + ... + 114611.

It is an arithmetic number, because the mean of its divisors is an integer number (4959110).

Almost surely, 2^39138651 is an apocalyptic number.

39138651 is a deficient number, since it is larger than the sum of its proper divisors (20370669).

39138651 is a wasteful number, since it uses less digits than its factorization.

39138651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228906 (or 228903 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 39138651 is about 6256.0891138154. The cubic root of 39138651 is about 339.5225449430.

The spelling of 39138651 in words is "thirty-nine million, one hundred thirty-eight thousand, six hundred fifty-one".