38431249 has 2 divisors, whose sum is σ = 38431250. Its totient is φ = 38431248.

The previous prime is 38431219. The next prime is 38431277. The reversal of 38431249 is 94213483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19421649 + 19009600 = 4407^2 + 4360^2 .

It is a cyclic number.

It is not a de Polignac number, because 38431249 - 2⁹ = 38430737 is a prime.

It is not a weakly prime, because it can be changed into another prime (38431219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19215624 + 19215625.

It is an arithmetic number, because the mean of its divisors is an integer number (19215625).

Almost surely, 2^38431249 is an apocalyptic number.

It is an amenable number.

38431249 is a deficient number, since it is larger than the sum of its proper divisors (1).

38431249 is an equidigital number, since it uses as much as digits as its factorization.

38431249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 38431249 is about 6199.2942340237. The cubic root of 38431249 is about 337.4645566803.

The spelling of 38431249 in words is "thirty-eight million, four hundred thirty-one thousand, two hundred forty-nine".