138364403 has 8 divisors (see below), whose sum is σ = 147403200. Its totient is φ = 129501288.

The previous prime is 138364399. The next prime is 138364417. The reversal of 138364403 is 304463831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138364403 - 2² = 138364399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138364403.

It is not an unprimeable number, because it can be changed into a prime (138364433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42293 + ... + 45446.

It is an arithmetic number, because the mean of its divisors is an integer number (18425400).

Almost surely, 2^138364403 is an apocalyptic number.

138364403 is a deficient number, since it is larger than the sum of its proper divisors (9038797).

138364403 is an equidigital number, since it uses as much as digits as its factorization.

138364403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87841.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 138364403 is about 11762.8399206994. The cubic root of 138364403 is about 517.2193821944.

The spelling of 138364403 in words is "one hundred thirty-eight million, three hundred sixty-four thousand, four hundred three".