38779369 has 2 divisors, whose sum is σ = 38779370. Its totient is φ = 38779368.

The previous prime is 38779333. The next prime is 38779373. The reversal of 38779369 is 96397783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33489369 + 5290000 = 5787^2 + 2300^2 .

It is an emirp because it is prime and its reverse (96397783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38779369 - 2¹⁵ = 38746601 is a prime.

It is a super-2 number, since 2×38779369² = 3007678920076322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38779379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19389684 + 19389685.

It is an arithmetic number, because the mean of its divisors is an integer number (19389685).

Almost surely, 2^38779369 is an apocalyptic number.

It is an amenable number.

38779369 is a deficient number, since it is larger than the sum of its proper divisors (1).

38779369 is an equidigital number, since it uses as much as digits as its factorization.

38779369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 52.

The square root of 38779369 is about 6227.3083270383. The cubic root of 38779369 is about 338.4804419578.

The spelling of 38779369 in words is "thirty-eight million, seven hundred seventy-nine thousand, three hundred sixty-nine".