38351399 has 4 divisors (see below), whose sum is σ = 39243336. Its totient is φ = 37459464.

The previous prime is 38351393. The next prime is 38351407. The reversal of 38351399 is 99315383.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99315383 = 197 ⋅504139.

It is a cyclic number.

It is not a de Polignac number, because 38351399 - 2²⁰ = 37302823 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 (38351393) 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 3 ways as a sum of consecutive naturals, for example, 445904 + ... + 445989.

It is an arithmetic number, because the mean of its divisors is an integer number (9810834).

Almost surely, 2^38351399 is an apocalyptic number.

38351399 is a deficient number, since it is larger than the sum of its proper divisors (891937).

38351399 is an equidigital number, since it uses as much as digits as its factorization.

38351399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891936.

The product of its digits is 87480, while the sum is 41.

The square root of 38351399 is about 6192.8506360157. The cubic root of 38351399 is about 337.2306738400.

The spelling of 38351399 in words is "thirty-eight million, three hundred fifty-one thousand, three hundred ninety-nine".