39468881 has 4 divisors (see below), whose sum is σ = 39859764. Its totient is φ = 39078000.

The previous prime is 39468857. The next prime is 39468887. The reversal of 39468881 is 18886493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18886493 = 199 ⋅94907.

It can be written as a sum of positive squares in 2 ways, for example, as 25150225 + 14318656 = 5015^2 + 3784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39468881 is a prime.

It is a super-2 number, since 2×39468881² = 3115585134784322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39468887) 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, 195290 + ... + 195491.

It is an arithmetic number, because the mean of its divisors is an integer number (9964941).

Almost surely, 2^39468881 is an apocalyptic number.

It is an amenable number.

39468881 is a deficient number, since it is larger than the sum of its proper divisors (390883).

39468881 is a wasteful number, since it uses less digits than its factorization.

39468881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390882.

The product of its digits is 331776, while the sum is 47.

The square root of 39468881 is about 6282.4263624813. The cubic root of 39468881 is about 340.4747721345.

The spelling of 39468881 in words is "thirty-nine million, four hundred sixty-eight thousand, eight hundred eighty-one".