39398929 has 4 divisors (see below), whose sum is σ = 39413284. Its totient is φ = 39384576.

The previous prime is 39398927. The next prime is 39398939. The reversal of 39398929 is 92989393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92989393 = 7 ⋅13284199.

It can be written as a sum of positive squares in 2 ways, for example, as 2772225 + 36626704 = 1665^2 + 6052^2 .

It is a cyclic number.

It is not a de Polignac number, because 39398929 - 2¹ = 39398927 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39398927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1632 + ... + 9025.

It is an arithmetic number, because the mean of its divisors is an integer number (9853321).

Almost surely, 2^39398929 is an apocalyptic number.

It is an amenable number.

39398929 is a deficient number, since it is larger than the sum of its proper divisors (14355).

39398929 is a wasteful number, since it uses less digits than its factorization.

39398929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14354.

The product of its digits is 944784, while the sum is 52.

The square root of 39398929 is about 6276.8566177666. The cubic root of 39398929 is about 340.2735082947.

The spelling of 39398929 in words is "thirty-nine million, three hundred ninety-eight thousand, nine hundred twenty-nine".