401694356 has 36 divisors (see below), whose sum is σ = 853298208. Its totient is φ = 164667888.

The previous prime is 401694331. The next prime is 401694389. The reversal of 401694356 is 653496104.

It is a super-2 number, since 2×401694356² = 322716711284509472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40046 + ... + 49061.

It is an arithmetic number, because the mean of its divisors is an integer number (23702728).

Almost surely, 2^401694356 is an apocalyptic number.

401694356 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

401694356 is an abundant number, since it is smaller than the sum of its proper divisors (451603852).

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

401694356 is a wasteful number, since it uses less digits than its factorization.

401694356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89148 (or 89139 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 401694356 is about 20042.3141378435. The cubic root of 401694356 is about 737.8451777273.

The spelling of 401694356 in words is "four hundred one million, six hundred ninety-four thousand, three hundred fifty-six".