39390499 has 2 divisors, whose sum is σ = 39390500. Its totient is φ = 39390498.

The previous prime is 39390493. The next prime is 39390517. The reversal of 39390499 is 99409393.

It is a weak prime.

It is an emirp because it is prime and its reverse (99409393) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39390499 - 2¹¹ = 39388451 is a prime.

It is a super-2 number, since 2×39390499² = 3103222822938002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39390493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19695249 + 19695250.

It is an arithmetic number, because the mean of its divisors is an integer number (19695250).

Almost surely, 2^39390499 is an apocalyptic number.

39390499 is a deficient number, since it is larger than the sum of its proper divisors (1).

39390499 is an equidigital number, since it uses as much as digits as its factorization.

39390499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 236196, while the sum is 46.

The square root of 39390499 is about 6276.1850673797. The cubic root of 39390499 is about 340.2492376664.

The spelling of 39390499 in words is "thirty-nine million, three hundred ninety thousand, four hundred ninety-nine".