39888901 has 12 divisors (see below), whose sum is σ = 43421508. Its totient is φ = 36626304.

The previous prime is 39888899. The next prime is 39888911. The reversal of 39888901 is 10988893.

It can be written as a sum of positive squares in 6 ways, for example, as 25250625 + 14638276 = 5025^2 + 3826^2 .

It is not a de Polignac number, because 39888901 - 2¹ = 39888899 is a prime.

It is a super-2 number, since 2×39888901² = 3182248845975602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39888911) 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, 38871 + ... + 39883.

It is an arithmetic number, because the mean of its divisors is an integer number (3618459).

Almost surely, 2^39888901 is an apocalyptic number.

It is an amenable number.

39888901 is a deficient number, since it is larger than the sum of its proper divisors (3532607).

39888901 is a wasteful number, since it uses less digits than its factorization.

39888901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272 (or 1259 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 39888901 is about 6315.7660659654. The cubic root of 39888901 is about 341.6782680442.

The spelling of 39888901 in words is "thirty-nine million, eight hundred eighty-eight thousand, nine hundred one".