401040440 has 16 divisors (see below), whose sum is σ = 902341080. Its totient is φ = 160416160.

The previous prime is 401040427. The next prime is 401040457. The reversal of 401040440 is 44040104.

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, 5012966 + ... + 5013045.

Almost surely, 2^401040440 is an apocalyptic number.

401040440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401040440 is an abundant number, since it is smaller than the sum of its proper divisors (501300640).

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

401040440 is a wasteful number, since it uses less digits than its factorization.

401040440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10026022 (or 10026018 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 401040440 is about 20025.9941076592. The cubic root of 401040440 is about 737.4445822574. Note that the first 3 decimals are identical.

Adding to 401040440 its reverse (44040104), we get a palindrome (445080544).

The spelling of 401040440 in words is "four hundred one million, forty thousand, four hundred forty".