401615946 has 12 divisors (see below), whose sum is σ = 870167922. Its totient is φ = 133871976.

The previous prime is 401615933. The next prime is 401615947. The reversal of 401615946 is 649516104.

401615946 is a `hidden beast` number, since 4 + 0 + 1 + 61 + 594 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 391446225 + 10169721 = 19785^2 + 3189^2 .

It is a super-2 number, since 2×401615946² = 322590736162949832, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 401615946.

It is not an unprimeable number, because it can be changed into a prime (401615947) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11155981 + ... + 11156016.

Almost surely, 2^401615946 is an apocalyptic number.

401615946 is an abundant number, since it is smaller than the sum of its proper divisors (468551976).

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

401615946 is a wasteful number, since it uses less digits than its factorization.

401615946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22312005 (or 22312002 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 401615946 is about 20040.3579309353. The cubic root of 401615946 is about 737.7971659290.

The spelling of 401615946 in words is "four hundred one million, six hundred fifteen thousand, nine hundred forty-six".