39415961 has 8 divisors (see below), whose sum is σ = 42546504. Its totient is φ = 36299520.

The previous prime is 39415933. The next prime is 39415963. The reversal of 39415961 is 16951493.

It can be written as a sum of positive squares in 4 ways, for example, as 7425625 + 31990336 = 2725^2 + 5656^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39415961 - 2⁶ = 39415897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39415963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2705 + ... + 9281.

It is an arithmetic number, because the mean of its divisors is an integer number (5318313).

Almost surely, 2^39415961 is an apocalyptic number.

It is an amenable number.

39415961 is a deficient number, since it is larger than the sum of its proper divisors (3130543).

39415961 is a wasteful number, since it uses less digits than its factorization.

39415961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7051.

The product of its digits is 29160, while the sum is 38.

The square root of 39415961 is about 6278.2132012221. The cubic root of 39415961 is about 340.3225341914.

The spelling of 39415961 in words is "thirty-nine million, four hundred fifteen thousand, nine hundred sixty-one".