39886461 has 6 divisors (see below), whose sum is σ = 57613790. Its totient is φ = 26590968.

The previous prime is 39886433. The next prime is 39886463. The reversal of 39886461 is 16468893.

It can be written as a sum of positive squares in only one way, i.e., 29095236 + 10791225 = 5394^2 + 3285^2 .

It is not a de Polignac number, because 39886461 - 2¹³ = 39878269 is a prime.

It is a super-2 number, since 2×39886461² = 3181859542209042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39886463) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2215906 + ... + 2215923.

Almost surely, 2^39886461 is an apocalyptic number.

It is an amenable number.

39886461 is a deficient number, since it is larger than the sum of its proper divisors (17727329).

39886461 is a wasteful number, since it uses less digits than its factorization.

39886461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4431835 (or 4431832 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 39886461 is about 6315.5728956287. The cubic root of 39886461 is about 341.6713010939.

The spelling of 39886461 in words is "thirty-nine million, eight hundred eighty-six thousand, four hundred sixty-one".