39733139 has 2 divisors, whose sum is σ = 39733140. Its totient is φ = 39733138.

The previous prime is 39733117. The next prime is 39733147. The reversal of 39733139 is 93133793.

It is a strong prime.

It is an emirp because it is prime and its reverse (93133793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39733139 - 2¹⁶ = 39667603 is a prime.

It is not a weakly prime, because it can be changed into another prime (39733039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19866569 + 19866570.

It is an arithmetic number, because the mean of its divisors is an integer number (19866570).

Almost surely, 2^39733139 is an apocalyptic number.

39733139 is a deficient number, since it is larger than the sum of its proper divisors (1).

39733139 is an equidigital number, since it uses as much as digits as its factorization.

39733139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45927, while the sum is 38.

The square root of 39733139 is about 6303.4228003522. The cubic root of 39733139 is about 341.2329485592.

The spelling of 39733139 in words is "thirty-nine million, seven hundred thirty-three thousand, one hundred thirty-nine".