38990503 has 4 divisors (see below), whose sum is σ = 41284080. Its totient is φ = 36696928.

The previous prime is 38990491. The next prime is 38990507. The reversal of 38990503 is 30509983.

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-38990503 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 (38990507) 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, 1146763 + ... + 1146796.

It is an arithmetic number, because the mean of its divisors is an integer number (10321020).

Almost surely, 2^38990503 is an apocalyptic number.

38990503 is a deficient number, since it is larger than the sum of its proper divisors (2293577).

38990503 is a wasteful number, since it uses less digits than its factorization.

38990503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293576.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 38990503 is about 6244.2375835645. The cubic root of 38990503 is about 339.0936152846.

It can be divided in two parts, 38990 and 503, that added together give a palindrome (39493).

The spelling of 38990503 in words is "thirty-eight million, nine hundred ninety thousand, five hundred three".