38901409 has 2 divisors, whose sum is σ = 38901410. Its totient is φ = 38901408.

The previous prime is 38901391. The next prime is 38901413. The reversal of 38901409 is 90410983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30835809 + 8065600 = 5553^2 + 2840^2 .

It is a cyclic number.

It is not a de Polignac number, because 38901409 - 2⁵ = 38901377 is a prime.

It is equal to p_2370778 and since 38901409 and 2370778 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (38901449) 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, 19450704 + 19450705.

It is an arithmetic number, because the mean of its divisors is an integer number (19450705).

Almost surely, 2^38901409 is an apocalyptic number.

It is an amenable number.

38901409 is a deficient number, since it is larger than the sum of its proper divisors (1).

38901409 is an equidigital number, since it uses as much as digits as its factorization.

38901409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 38901409 is about 6237.0994059739. The cubic root of 38901409 is about 338.8351399762.

The spelling of 38901409 in words is "thirty-eight million, nine hundred one thousand, four hundred nine".