39882991 has 8 divisors (see below), whose sum is σ = 40399040. Its totient is φ = 39369888.

The previous prime is 39882971. The next prime is 39883001. The reversal of 39882991 is 19928893.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39882991 is a prime.

It is a super-2 number, since 2×39882991² = 3181305942212162, 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 (39882971) 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, 39505 + ... + 40501.

It is an arithmetic number, because the mean of its divisors is an integer number (5049880).

Almost surely, 2^39882991 is an apocalyptic number.

39882991 is a deficient number, since it is larger than the sum of its proper divisors (516049).

39882991 is a wasteful number, since it uses less digits than its factorization.

39882991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473.

The product of its digits is 279936, while the sum is 49.

The square root of 39882991 is about 6315.2981718997. The cubic root of 39882991 is about 341.6613926874.

The spelling of 39882991 in words is "thirty-nine million, eight hundred eighty-two thousand, nine hundred ninety-one".