38740491 has 16 divisors (see below), whose sum is σ = 59373600. Its totient is φ = 24935904.

The previous prime is 38740489. The next prime is 38740523. The reversal of 38740491 is 19404783.

It is a happy number.

It is not a de Polignac number, because 38740491 - 2¹ = 38740489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38741491) 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 in 15 ways as a sum of consecutive naturals, for example, 23956 + ... + 25521.

It is an arithmetic number, because the mean of its divisors is an integer number (3710850).

Almost surely, 2^38740491 is an apocalyptic number.

38740491 is a deficient number, since it is larger than the sum of its proper divisors (20633109).

38740491 is a wasteful number, since it uses less digits than its factorization.

38740491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49515 (or 49509 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 38740491 is about 6224.1859708720. The cubic root of 38740491 is about 338.3672903599.

The spelling of 38740491 in words is "thirty-eight million, seven hundred forty thousand, four hundred ninety-one".