39854489 has 4 divisors (see below), whose sum is σ = 39872820. Its totient is φ = 39836160.

The previous prime is 39854447. The next prime is 39854509. The reversal of 39854489 is 98445893.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 478864 + 39375625 = 692^2 + 6275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39854489 is a prime.

It is a super-2 number, since 2×39854489² = 3176760586902242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39854429) 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, 5384 + ... + 10425.

It is an arithmetic number, because the mean of its divisors is an integer number (9968205).

Almost surely, 2^39854489 is an apocalyptic number.

It is an amenable number.

39854489 is a deficient number, since it is larger than the sum of its proper divisors (18331).

39854489 is a wasteful number, since it uses less digits than its factorization.

39854489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18330.

The product of its digits is 1244160, while the sum is 50.

The square root of 39854489 is about 6313.0411847223. The cubic root of 39854489 is about 341.5799849376.

The spelling of 39854489 in words is "thirty-nine million, eight hundred fifty-four thousand, four hundred eighty-nine".