38922709 has 6 divisors (see below), whose sum is σ = 45277494. Its totient is φ = 33362280.

The previous prime is 38922679. The next prime is 38922733. The reversal of 38922709 is 90722983.

It can be written as a sum of positive squares in only one way, i.e., 35736484 + 3186225 = 5978^2 + 1785^2 .

It is not a de Polignac number, because 38922709 - 2⁵ = 38922677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38922769) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 397122 + ... + 397219.

It is an arithmetic number, because the mean of its divisors is an integer number (7546249).

Almost surely, 2^38922709 is an apocalyptic number.

It is an amenable number.

38922709 is a deficient number, since it is larger than the sum of its proper divisors (6354785).

38922709 is an equidigital number, since it uses as much as digits as its factorization.

38922709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794355 (or 794348 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 38922709 is about 6238.8066967971. The cubic root of 38922709 is about 338.8969703986.

The spelling of 38922709 in words is "thirty-eight million, nine hundred twenty-two thousand, seven hundred nine".