38772397 has 4 divisors (see below), whose sum is σ = 38905020. Its totient is φ = 38639776.

The previous prime is 38772379. The next prime is 38772401. The reversal of 38772397 is 79327783.

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 25948836 + 12823561 = 5094^2 + 3581^2 .

It is a cyclic number.

It is not a de Polignac number, because 38772397 - 2¹¹ = 38770349 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 (38772317) 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, 65872 + ... + 66457.

It is an arithmetic number, because the mean of its divisors is an integer number (9726255).

Almost surely, 2^38772397 is an apocalyptic number.

It is an amenable number.

38772397 is a deficient number, since it is larger than the sum of its proper divisors (132623).

38772397 is a wasteful number, since it uses less digits than its factorization.

38772397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132622.

The product of its digits is 444528, while the sum is 46.

The square root of 38772397 is about 6226.7485094550. The cubic root of 38772397 is about 338.4601560245.

The spelling of 38772397 in words is "thirty-eight million, seven hundred seventy-two thousand, three hundred ninety-seven".