38949947 has 2 divisors, whose sum is σ = 38949948. Its totient is φ = 38949946.

The previous prime is 38949917. The next prime is 38949983. The reversal of 38949947 is 74994983.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38949947 - 2¹⁴ = 38933563 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38949917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19474973 + 19474974.

It is an arithmetic number, because the mean of its divisors is an integer number (19474974).

Almost surely, 2^38949947 is an apocalyptic number.

38949947 is a deficient number, since it is larger than the sum of its proper divisors (1).

38949947 is an equidigital number, since it uses as much as digits as its factorization.

38949947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 53.

The square root of 38949947 is about 6240.9892645317. The cubic root of 38949947 is about 338.9760050077.

The spelling of 38949947 in words is "thirty-eight million, nine hundred forty-nine thousand, nine hundred forty-seven".