38440197 has 8 divisors (see below), whose sum is σ = 56948480. Its totient is φ = 25626780.

The previous prime is 38440183. The next prime is 38440201. The reversal of 38440197 is 79104483.

It is a happy number.

It is not a de Polignac number, because 38440197 - 2⁶ = 38440133 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 (38440117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 711829 + ... + 711882.

It is an arithmetic number, because the mean of its divisors is an integer number (7118560).

Almost surely, 2^38440197 is an apocalyptic number.

It is an amenable number.

38440197 is a deficient number, since it is larger than the sum of its proper divisors (18508283).

38440197 is a wasteful number, since it uses less digits than its factorization.

38440197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423720 (or 1423714 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 38440197 is about 6200.0158870764. The cubic root of 38440197 is about 337.4907454252.

The spelling of 38440197 in words is "thirty-eight million, four hundred forty thousand, one hundred ninety-seven".