39201381 has 16 divisors (see below), whose sum is σ = 58219200. Its totient is φ = 26069904.

The previous prime is 39201377. The next prime is 39201403. The reversal of 39201381 is 18310293.

It is not a de Polignac number, because 39201381 - 2² = 39201377 is a prime.

It is a super-2 number, since 2×39201381² = 3073496544614322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39201341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11055 + ... + 14163.

It is an arithmetic number, because the mean of its divisors is an integer number (3638700).

Almost surely, 2^39201381 is an apocalyptic number.

It is an amenable number.

39201381 is a deficient number, since it is larger than the sum of its proper divisors (19017819).

39201381 is a wasteful number, since it uses less digits than its factorization.

39201381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585 (or 3579 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 39201381 is about 6261.1006220951. The cubic root of 39201381 is about 339.7038395639.

The spelling of 39201381 in words is "thirty-nine million, two hundred one thousand, three hundred eighty-one".