401961982 has 8 divisors (see below), whose sum is σ = 623734200. Its totient is φ = 194050584.

The previous prime is 401961977. The next prime is 401961997. The reversal of 401961982 is 289169104.

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

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, 3465132 + ... + 3465247.

It is an arithmetic number, because the mean of its divisors is an integer number (77966775).

Almost surely, 2^401961982 is an apocalyptic number.

401961982 is a deficient number, since it is larger than the sum of its proper divisors (221772218).

401961982 is a wasteful number, since it uses less digits than its factorization.

401961982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6930410.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 401961982 is about 20048.9895505983. The cubic root of 401961982 is about 738.0090027128.

The spelling of 401961982 in words is "four hundred one million, nine hundred sixty-one thousand, nine hundred eighty-two".