38402549 has 2 divisors, whose sum is σ = 38402550. Its totient is φ = 38402548.

The previous prime is 38402543. The next prime is 38402557. The reversal of 38402549 is 94520483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32001649 + 6400900 = 5657^2 + 2530^2 .

It is a cyclic number.

It is not a de Polignac number, because 38402549 - 2²⁴ = 21625333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38402543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19201274 + 19201275.

It is an arithmetic number, because the mean of its divisors is an integer number (19201275).

Almost surely, 2^38402549 is an apocalyptic number.

It is an amenable number.

38402549 is a deficient number, since it is larger than the sum of its proper divisors (1).

38402549 is an equidigital number, since it uses as much as digits as its factorization.

38402549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 38402549 is about 6196.9790220720. The cubic root of 38402549 is about 337.3805309203.

The spelling of 38402549 in words is "thirty-eight million, four hundred two thousand, five hundred forty-nine".