38737949 has 2 divisors, whose sum is σ = 38737950. Its totient is φ = 38737948.

The previous prime is 38737943. The next prime is 38737973. The reversal of 38737949 is 94973783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36517849 + 2220100 = 6043^2 + 1490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38737949 is a prime.

It is a super-3 number, since 3×38737949³ (a number of 24 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 38737897 and 38737906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38737943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19368974 + 19368975.

It is an arithmetic number, because the mean of its divisors is an integer number (19368975).

Almost surely, 2^38737949 is an apocalyptic number.

It is an amenable number.

38737949 is a deficient number, since it is larger than the sum of its proper divisors (1).

38737949 is an equidigital number, since it uses as much as digits as its factorization.

38737949 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 38737949 is about 6223.9817641121. The cubic root of 38737949 is about 338.3598894171.

The spelling of 38737949 in words is "thirty-eight million, seven hundred thirty-seven thousand, nine hundred forty-nine".