401509982 has 8 divisors (see below), whose sum is σ = 602834736. Its totient is φ = 200565072.

The previous prime is 401509973. The next prime is 401509993. The reversal of 401509982 is 289905104.

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

It is a super-2 number, since 2×401509982² = 322420531291280648, 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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92303 + ... + 96554.

It is an arithmetic number, because the mean of its divisors is an integer number (75354342).

Almost surely, 2^401509982 is an apocalyptic number.

401509982 is a deficient number, since it is larger than the sum of its proper divisors (201324754).

401509982 is a wasteful number, since it uses less digits than its factorization.

401509982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189922.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 401509982 is about 20037.7139913714. The cubic root of 401509982 is about 737.7322724103.

The spelling of 401509982 in words is "four hundred one million, five hundred nine thousand, nine hundred eighty-two".