39894961 has 4 divisors (see below), whose sum is σ = 40002292. Its totient is φ = 39787632.

The previous prime is 39894941. The next prime is 39894973. The reversal of 39894961 is 16949893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16949893 = 229 ⋅74017.

It can be written as a sum of positive squares in 2 ways, for example, as 12531600 + 27363361 = 3540^2 + 5231^2 .

It is a cyclic number.

It is not a de Polignac number, because 39894961 - 2⁵ = 39894929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39894901) 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, 53106 + ... + 53851.

It is an arithmetic number, because the mean of its divisors is an integer number (10000573).

Almost surely, 2^39894961 is an apocalyptic number.

It is an amenable number.

39894961 is a deficient number, since it is larger than the sum of its proper divisors (107331).

39894961 is a wasteful number, since it uses less digits than its factorization.

39894961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107330.

The product of its digits is 419904, while the sum is 49.

The square root of 39894961 is about 6316.2457995236. The cubic root of 39894961 is about 341.6955699787.

It can be divided in two parts, 398 and 94961, that added together give a palindrome (95359).

The spelling of 39894961 in words is "thirty-nine million, eight hundred ninety-four thousand, nine hundred sixty-one".