38406899 has 2 divisors, whose sum is σ = 38406900. Its totient is φ = 38406898.

The previous prime is 38406883. The next prime is 38406911. The reversal of 38406899 is 99860483.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38406899 - 2⁴ = 38406883 is a prime.

It is not a weakly prime, because it can be changed into another prime (38406499) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19203449 + 19203450.

It is an arithmetic number, because the mean of its divisors is an integer number (19203450).

Almost surely, 2^38406899 is an apocalyptic number.

38406899 is a deficient number, since it is larger than the sum of its proper divisors (1).

38406899 is an equidigital number, since it uses as much as digits as its factorization.

38406899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 38406899 is about 6197.3299896004. The cubic root of 38406899 is about 337.3932692232.

The spelling of 38406899 in words is "thirty-eight million, four hundred six thousand, eight hundred ninety-nine".