39136961 has 4 divisors (see below), whose sum is σ = 40838592. Its totient is φ = 37435332.

The previous prime is 39136957. The next prime is 39136963. The reversal of 39136961 is 16963193.

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 39136961 - 2² = 39136957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39136963) 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, 850781 + ... + 850826.

It is an arithmetic number, because the mean of its divisors is an integer number (10209648).

Almost surely, 2^39136961 is an apocalyptic number.

It is an amenable number.

39136961 is a deficient number, since it is larger than the sum of its proper divisors (1701631).

39136961 is a wasteful number, since it uses less digits than its factorization.

39136961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701630.

The product of its digits is 26244, while the sum is 38.

The square root of 39136961 is about 6255.9540439489. The cubic root of 39136961 is about 339.5176580316.

The spelling of 39136961 in words is "thirty-nine million, one hundred thirty-six thousand, nine hundred sixty-one".