401849216 has 16 divisors (see below), whose sum is σ = 800559240. Its totient is φ = 200924544.

The previous prime is 401849117. The next prime is 401849237. The reversal of 401849216 is 612948104.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×401849216² = 322965584799629312, 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 as a sum of consecutive naturals, namely, 1569596 + ... + 1569851.

Almost surely, 2^401849216 is an apocalyptic number.

It is an amenable number.

401849216 is a deficient number, since it is larger than the sum of its proper divisors (398710024).

401849216 is an equidigital number, since it uses as much as digits as its factorization.

401849216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139461 (or 3139449 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 401849216 is about 20046.1770919046. The cubic root of 401849216 is about 737.9399828299.

The spelling of 401849216 in words is "four hundred one million, eight hundred forty-nine thousand, two hundred sixteen".