403425638 has 16 divisors (see below), whose sum is σ = 754458624. Its totient is φ = 157178760.

The previous prime is 403425611. The next prime is 403425647. The reversal of 403425638 is 836524304.

It is a junction number, because it is equal to n+sod(n) for n = 403425598 and 403425607.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1309670 + ... + 1309977.

It is an arithmetic number, because the mean of its divisors is an integer number (47153664).

Almost surely, 2^403425638 is an apocalyptic number.

403425638 is a deficient number, since it is larger than the sum of its proper divisors (351032986).

403425638 is a wasteful number, since it uses less digits than its factorization.

403425638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619667.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 403425638 is about 20085.4583716678. The cubic root of 403425638 is about 738.9036833925.

The spelling of 403425638 in words is "four hundred three million, four hundred twenty-five thousand, six hundred thirty-eight".