401084440 has 32 divisors (see below), whose sum is σ = 926833680. Its totient is φ = 156097152.

The previous prime is 401084429. The next prime is 401084449. The reversal of 401084440 is 44480104.

It is a happy number.

It is a super-2 number, since 2×401084440² = 321737456020227200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401084449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134022 + ... + 136981.

Almost surely, 2^401084440 is an apocalyptic number.

401084440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401084440 is an abundant number, since it is smaller than the sum of its proper divisors (525749240).

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

401084440 is a wasteful number, since it uses less digits than its factorization.

401084440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271051 (or 271047 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 401084440 is about 20027.0926497083. The cubic root of 401084440 is about 737.4715507555.

The spelling of 401084440 in words is "four hundred one million, eighty-four thousand, four hundred forty".