634429403 has 4 divisors (see below), whose sum is σ = 636456648. Its totient is φ = 632402160.

The previous prime is 634429391. The next prime is 634429421. The reversal of 634429403 is 304924436.

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 634429403 - 2²⁶ = 567320539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634429303) 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, 1013153 + ... + 1013778.

It is an arithmetic number, because the mean of its divisors is an integer number (159114162).

Almost surely, 2^634429403 is an apocalyptic number.

634429403 is a deficient number, since it is larger than the sum of its proper divisors (2027245).

634429403 is a wasteful number, since it uses less digits than its factorization.

634429403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027244.

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 634429403 is about 25187.8820665811. The cubic root of 634429403 is about 859.2662765692.

The spelling of 634429403 in words is "six hundred thirty-four million, four hundred twenty-nine thousand, four hundred three".