38749999 has 2 divisors, whose sum is σ = 38750000. Its totient is φ = 38749998.

The previous prime is 38749993. The next prime is 38750011. The reversal of 38749999 is 99994783.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38749999 is a prime.

38749999 is a modest number, since divided by 9999 gives 3874 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38749993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19374999 + 19375000.

It is an arithmetic number, because the mean of its divisors is an integer number (19375000).

Almost surely, 2^38749999 is an apocalyptic number.

38749999 is a deficient number, since it is larger than the sum of its proper divisors (1).

38749999 is an equidigital number, since it uses as much as digits as its factorization.

38749999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 58.

The square root of 38749999 is about 6224.9497186724. The cubic root of 38749999 is about 338.3949696944.

The spelling of 38749999 in words is "thirty-eight million, seven hundred forty-nine thousand, nine hundred ninety-nine".