38740447 has 4 divisors (see below), whose sum is σ = 39000600. Its totient is φ = 38480296.

The previous prime is 38740417. The next prime is 38740459. The reversal of 38740447 is 74404783.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38740447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38740417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129853 + ... + 130150.

It is an arithmetic number, because the mean of its divisors is an integer number (9750150).

Almost surely, 2^38740447 is an apocalyptic number.

38740447 is a deficient number, since it is larger than the sum of its proper divisors (260153).

38740447 is a wasteful number, since it uses less digits than its factorization.

38740447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260152.

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 38740447 is about 6224.1824362723. The cubic root of 38740447 is about 338.3671622582.

The spelling of 38740447 in words is "thirty-eight million, seven hundred forty thousand, four hundred forty-seven".