39879141 has 4 divisors (see below), whose sum is σ = 53172192. Its totient is φ = 26586092.

The previous prime is 39879083. The next prime is 39879149. The reversal of 39879141 is 14197893.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39879141 - 2¹¹ = 39877093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39879093 and 39879102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39879149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6646521 + ... + 6646526.

It is an arithmetic number, because the mean of its divisors is an integer number (13293048).

Almost surely, 2^39879141 is an apocalyptic number.

It is an amenable number.

39879141 is a deficient number, since it is larger than the sum of its proper divisors (13293051).

39879141 is a wasteful number, since it uses less digits than its factorization.

39879141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13293050.

The product of its digits is 54432, while the sum is 42.

The square root of 39879141 is about 6314.9933491651. The cubic root of 39879141 is about 341.6503985380.

The spelling of 39879141 in words is "thirty-nine million, eight hundred seventy-nine thousand, one hundred forty-one".