401982774 has 8 divisors (see below), whose sum is σ = 803965560. Its totient is φ = 133994256.

The previous prime is 401982769. The next prime is 401982803. The reversal of 401982774 is 477289104.

It is a happy number.

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

401982774 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33498559 + ... + 33498570.

It is an arithmetic number, because the mean of its divisors is an integer number (100495695).

Almost surely, 2^401982774 is an apocalyptic number.

401982774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

401982774 is a wasteful number, since it uses less digits than its factorization.

401982774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66997134.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 401982774 is about 20049.5080737658. The cubic root of 401982774 is about 738.0217273147.

The spelling of 401982774 in words is "four hundred one million, nine hundred eighty-two thousand, seven hundred seventy-four".