38247399 has 48 divisors (see below), whose sum is σ = 62899200. Its totient is φ = 22249728.

The previous prime is 38247311. The next prime is 38247421. The reversal of 38247399 is 99374283.

It is a happy number.

It is not a de Polignac number, because 38247399 - 2⁷ = 38247271 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

Its product of digits (326592) is a multiple of the sum of its prime factors (324).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38247199) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 171402 + ... + 171624.

It is an arithmetic number, because the mean of its divisors is an integer number (1310400).

Almost surely, 2^38247399 is an apocalyptic number.

38247399 is a deficient number, since it is larger than the sum of its proper divisors (24651801).

38247399 is a wasteful number, since it uses less digits than its factorization.

38247399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 321 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 38247399 is about 6184.4481564647. The cubic root of 38247399 is about 336.9255677145.

The spelling of 38247399 in words is "thirty-eight million, two hundred forty-seven thousand, three hundred ninety-nine".