38421403 has 4 divisors (see below), whose sum is σ = 39314968. Its totient is φ = 37527840.

The previous prime is 38421373. The next prime is 38421443. The reversal of 38421403 is 30412483.

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

It is a cyclic number.

It is not a de Polignac number, because 38421403 - 2⁵ = 38421371 is a prime.

It is the 6199-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38421443) by changing a digit.

It is a nontrivial repunit in base 6198.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446718 + ... + 446803.

It is an arithmetic number, because the mean of its divisors is an integer number (9828742).

Almost surely, 2^38421403 is an apocalyptic number.

38421403 is a deficient number, since it is larger than the sum of its proper divisors (893565).

38421403 is an equidigital number, since it uses as much as digits as its factorization.

38421403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893564.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 38421403 is about 6198.5000604985. The cubic root of 38421403 is about 337.4357349974.

Adding to 38421403 its reverse (30412483), we get a palindrome (68833886).

The spelling of 38421403 in words is "thirty-eight million, four hundred twenty-one thousand, four hundred three".