634429849 has 8 divisors (see below), whose sum is σ = 657620480. Its totient is φ = 611409600.

The previous prime is 634429837. The next prime is 634429853. The reversal of 634429849 is 948924436.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 634429849 - 2⁷ = 634429721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634429889) 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 7 ways as a sum of consecutive naturals, for example, 34989 + ... + 49930.

It is an arithmetic number, because the mean of its divisors is an integer number (82202560).

Almost surely, 2^634429849 is an apocalyptic number.

It is an amenable number.

634429849 is a deficient number, since it is larger than the sum of its proper divisors (23190631).

634429849 is a wasteful number, since it uses less digits than its factorization.

634429849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85191.

The product of its digits is 1492992, while the sum is 49.

The square root of 634429849 is about 25187.8909200433. The cubic root of 634429849 is about 859.2664779222.

The spelling of 634429849 in words is "six hundred thirty-four million, four hundred twenty-nine thousand, eight hundred forty-nine".