38407389 has 4 divisors (see below), whose sum is σ = 51209856. Its totient is φ = 25604924.

The previous prime is 38407373. The next prime is 38407427. The reversal of 38407389 is 98370483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38407389 - 2⁴ = 38407373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38407389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38400389) 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, 6401229 + ... + 6401234.

It is an arithmetic number, because the mean of its divisors is an integer number (12802464).

Almost surely, 2^38407389 is an apocalyptic number.

It is an amenable number.

38407389 is a deficient number, since it is larger than the sum of its proper divisors (12802467).

38407389 is a wasteful number, since it uses less digits than its factorization.

38407389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12802466.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 38407389 is about 6197.3695226281. The cubic root of 38407389 is about 337.3947040522.

The spelling of 38407389 in words is "thirty-eight million, four hundred seven thousand, three hundred eighty-nine".