401603789 has 4 divisors (see below), whose sum is σ = 410943456. Its totient is φ = 392264124.

The previous prime is 401603773. The next prime is 401603821. The reversal of 401603789 is 987306104.

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 401603789 - 2⁴ = 401603773 is a prime.

It is a super-2 number, since 2×401603789² = 322571206678313042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401603749) 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, 4669769 + ... + 4669854.

It is an arithmetic number, because the mean of its divisors is an integer number (102735864).

Almost surely, 2^401603789 is an apocalyptic number.

It is an amenable number.

401603789 is a deficient number, since it is larger than the sum of its proper divisors (9339667).

401603789 is an equidigital number, since it uses as much as digits as its factorization.

401603789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9339666.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 401603789 is about 20040.0546156940. The cubic root of 401603789 is about 737.7897214282.

The spelling of 401603789 in words is "four hundred one million, six hundred three thousand, seven hundred eighty-nine".