39331289 has 4 divisors (see below), whose sum is σ = 39471540. Its totient is φ = 39191040.

The previous prime is 39331249. The next prime is 39331291. The reversal of 39331289 is 98213393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98213393 = 2617 ⋅37529.

It can be written as a sum of positive squares in 2 ways, for example, as 11505664 + 27825625 = 3392^2 + 5275^2 .

It is a cyclic number.

It is not a de Polignac number, because 39331289 - 2¹² = 39327193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39331249) 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, 69704 + ... + 70265.

It is an arithmetic number, because the mean of its divisors is an integer number (9867885).

Almost surely, 2^39331289 is an apocalyptic number.

It is an amenable number.

39331289 is a deficient number, since it is larger than the sum of its proper divisors (140251).

39331289 is a wasteful number, since it uses less digits than its factorization.

39331289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140250.

The product of its digits is 34992, while the sum is 38.

The square root of 39331289 is about 6271.4662559883. The cubic root of 39331289 is about 340.0786698005.

The spelling of 39331289 in words is "thirty-nine million, three hundred thirty-one thousand, two hundred eighty-nine".