38999959 has 2 divisors, whose sum is σ = 38999960. Its totient is φ = 38999958.

The previous prime is 38999911. The next prime is 38999969. The reversal of 38999959 is 95999983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38999959 - 2¹³ = 38991767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38999897 and 38999906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38999969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19499979 + 19499980.

It is an arithmetic number, because the mean of its divisors is an integer number (19499980).

Almost surely, 2^38999959 is an apocalyptic number.

38999959 is a deficient number, since it is larger than the sum of its proper divisors (1).

38999959 is an equidigital number, since it uses as much as digits as its factorization.

38999959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7085880, while the sum is 61.

The square root of 38999959 is about 6244.9947157704. The cubic root of 38999959 is about 339.1210254641.

The spelling of 38999959 in words is "thirty-eight million, nine hundred ninety-nine thousand, nine hundred fifty-nine".