38491879 has 2 divisors, whose sum is σ = 38491880. Its totient is φ = 38491878.

The previous prime is 38491867. The next prime is 38491889. The reversal of 38491879 is 97819483.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38491879 is a prime.

It is a super-3 number, since 3×38491879³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38491819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19245939 + 19245940.

It is an arithmetic number, because the mean of its divisors is an integer number (19245940).

Almost surely, 2^38491879 is an apocalyptic number.

38491879 is a deficient number, since it is larger than the sum of its proper divisors (1).

38491879 is an equidigital number, since it uses as much as digits as its factorization.

38491879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 49.

The square root of 38491879 is about 6204.1823796533. The cubic root of 38491879 is about 337.6419273218.

The spelling of 38491879 in words is "thirty-eight million, four hundred ninety-one thousand, eight hundred seventy-nine".