38878799 has 2 divisors, whose sum is σ = 38878800. Its totient is φ = 38878798.

The previous prime is 38878793. The next prime is 38878811. The reversal of 38878799 is 99787883.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38878799 - 2²⁰ = 37830223 is a prime.

It is a super-2 number, since 2×38878799² = 3023122023364802, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38878793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19439399 + 19439400.

It is an arithmetic number, because the mean of its divisors is an integer number (19439400).

Almost surely, 2^38878799 is an apocalyptic number.

38878799 is a deficient number, since it is larger than the sum of its proper divisors (1).

38878799 is an equidigital number, since it uses as much as digits as its factorization.

38878799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 59.

The square root of 38878799 is about 6235.2866012718. The cubic root of 38878799 is about 338.7694821382.

The spelling of 38878799 in words is "thirty-eight million, eight hundred seventy-eight thousand, seven hundred ninety-nine".