39128901 has 12 divisors (see below), whose sum is σ = 60689952. Its totient is φ = 22359288.

The previous prime is 39128899. The next prime is 39128933. The reversal of 39128901 is 10982193.

It is not a de Polignac number, because 39128901 - 2¹ = 39128899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39128501) 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, 132945 + ... + 133238.

It is an arithmetic number, because the mean of its divisors is an integer number (5057496).

Almost surely, 2^39128901 is an apocalyptic number.

It is an amenable number.

39128901 is a deficient number, since it is larger than the sum of its proper divisors (21561051).

39128901 is a wasteful number, since it uses less digits than its factorization.

39128901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266200 (or 266193 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 39128901 is about 6255.3098244611. The cubic root of 39128901 is about 339.4943492877.

It can be divided in two parts, 391 and 28901, that added together give a palindrome (29292).

The spelling of 39128901 in words is "thirty-nine million, one hundred twenty-eight thousand, nine hundred one".