403640422 has 4 divisors (see below), whose sum is σ = 605460636. Its totient is φ = 201820210.

The previous prime is 403640411. The next prime is 403640431. The reversal of 403640422 is 224046304.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100910104 + ... + 100910107.

It is an arithmetic number, because the mean of its divisors is an integer number (151365159).

Almost surely, 2^403640422 is an apocalyptic number.

403640422 is a deficient number, since it is larger than the sum of its proper divisors (201820214).

403640422 is a wasteful number, since it uses less digits than its factorization.

403640422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201820213.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 403640422 is about 20090.8044139601. The cubic root of 403640422 is about 739.0347910179.

Adding to 403640422 its reverse (224046304), we get a palindrome (627686726).

It can be divided in two parts, 4036404 and 22, that multiplied together give a palindrome (88800888).

The spelling of 403640422 in words is "four hundred three million, six hundred forty thousand, four hundred twenty-two".