401634834 has 16 divisors (see below), whose sum is σ = 820361088. Its totient is φ = 131029712.

The previous prime is 401634781. The next prime is 401634841. The reversal of 401634834 is 438436104.

It is a happy number.

It is a super-2 number, since 2×401634834² = 322621079764415112, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401634795 and 401634804.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 711837 + ... + 712400.

It is an arithmetic number, because the mean of its divisors is an integer number (51272568).

Almost surely, 2^401634834 is an apocalyptic number.

401634834 is an abundant number, since it is smaller than the sum of its proper divisors (418726254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401634834 is a wasteful number, since it uses less digits than its factorization.

401634834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424289.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 401634834 is about 20040.8291744628. The cubic root of 401634834 is about 737.8087319492.

The spelling of 401634834 in words is "four hundred one million, six hundred thirty-four thousand, eight hundred thirty-four".