38479681 has 2 divisors, whose sum is σ = 38479682. Its totient is φ = 38479680.

The previous prime is 38479631. The next prime is 38479691. The reversal of 38479681 is 18697483.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36108081 + 2371600 = 6009^2 + 1540^2 .

It is a cyclic number.

It is not a de Polignac number, because 38479681 - 2⁹ = 38479169 is a prime.

It is a super-2 number, since 2×38479681² = 2961371699723522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38479631) 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, 19239840 + 19239841.

It is an arithmetic number, because the mean of its divisors is an integer number (19239841).

Almost surely, 2^38479681 is an apocalyptic number.

It is an amenable number.

38479681 is a deficient number, since it is larger than the sum of its proper divisors (1).

38479681 is an equidigital number, since it uses as much as digits as its factorization.

38479681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 46.

The square root of 38479681 is about 6203.1992552231. The cubic root of 38479681 is about 337.6062575349.

The spelling of 38479681 in words is "thirty-eight million, four hundred seventy-nine thousand, six hundred eighty-one".