403738489 has 12 divisors (see below), whose sum is σ = 512351568. Its totient is φ = 314601000.

The previous prime is 403738397. The next prime is 403738501. The reversal of 403738489 is 984837304.

It is not a de Polignac number, because 403738489 - 2²⁷ = 269520761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403738189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 373987 + ... + 375064.

It is an arithmetic number, because the mean of its divisors is an integer number (42695964).

Almost surely, 2^403738489 is an apocalyptic number.

403738489 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

403738489 is a deficient number, since it is larger than the sum of its proper divisors (108613079).

403738489 is a wasteful number, since it uses less digits than its factorization.

403738489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749076 (or 749069 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 403738489 is about 20093.2448599025. The cubic root of 403738489 is about 739.0946372344.

The spelling of 403738489 in words is "four hundred three million, seven hundred thirty-eight thousand, four hundred eighty-nine".