38744149 has 2 divisors, whose sum is σ = 38744150. Its totient is φ = 38744148.

The previous prime is 38744137. The next prime is 38744177. The reversal of 38744149 is 94144783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25654225 + 13089924 = 5065^2 + 3618^2 .

It is an emirp because it is prime and its reverse (94144783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38744149 - 2⁵ = 38744117 is a prime.

It is a super-2 number, since 2×38744149² = 3002218163468402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38744119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19372074 + 19372075.

It is an arithmetic number, because the mean of its divisors is an integer number (19372075).

Almost surely, 2^38744149 is an apocalyptic number.

It is an amenable number.

38744149 is a deficient number, since it is larger than the sum of its proper divisors (1).

38744149 is an equidigital number, since it uses as much as digits as its factorization.

38744149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 40.

The square root of 38744149 is about 6224.4798176233. The cubic root of 38744149 is about 338.3779399288.

The spelling of 38744149 in words is "thirty-eight million, seven hundred forty-four thousand, one hundred forty-nine".