38973749 has 2 divisors, whose sum is σ = 38973750. Its totient is φ = 38973748.

The previous prime is 38973733. The next prime is 38973757. The reversal of 38973749 is 94737983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25150225 + 13823524 = 5015^2 + 3718^2 .

It is a cyclic number.

It is not a de Polignac number, because 38973749 - 2⁴ = 38973733 is a prime.

It is a super-2 number, since 2×38973749² = 3037906222230002, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 38973697 and 38973706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38973719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19486874 + 19486875.

It is an arithmetic number, because the mean of its divisors is an integer number (19486875).

Almost surely, 2^38973749 is an apocalyptic number.

It is an amenable number.

38973749 is a deficient number, since it is larger than the sum of its proper divisors (1).

38973749 is an equidigital number, since it uses as much as digits as its factorization.

38973749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 50.

The square root of 38973749 is about 6242.8958825212. The cubic root of 38973749 is about 339.0450394528.

The spelling of 38973749 in words is "thirty-eight million, nine hundred seventy-three thousand, seven hundred forty-nine".