38466139 has 2 divisors, whose sum is σ = 38466140. Its totient is φ = 38466138.

The previous prime is 38466083. The next prime is 38466157. The reversal of 38466139 is 93166483.

It is a strong prime.

It is an emirp because it is prime and its reverse (93166483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38466139 - 2¹¹ = 38464091 is a prime.

It is not a weakly prime, because it can be changed into another prime (38469139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19233069 + 19233070.

It is an arithmetic number, because the mean of its divisors is an integer number (19233070).

Almost surely, 2^38466139 is an apocalyptic number.

38466139 is a deficient number, since it is larger than the sum of its proper divisors (1).

38466139 is an equidigital number, since it uses as much as digits as its factorization.

38466139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 40.

The square root of 38466139 is about 6202.1076256382. The cubic root of 38466139 is about 337.5666487488.

The spelling of 38466139 in words is "thirty-eight million, four hundred sixty-six thousand, one hundred thirty-nine".