401440010 has 32 divisors (see below), whose sum is σ = 743554512. Its totient is φ = 155934720.

The previous prime is 401440009. The next prime is 401440021. The reversal of 401440010 is 10044104.

It can be written as a sum of positive squares in 8 ways, for example, as 336685801 + 64754209 = 18349^2 + 8047^2 .

It is a super-2 number, since 2×401440010² = 322308163257600200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347594 + ... + 348746.

Almost surely, 2^401440010 is an apocalyptic number.

401440010 is a deficient number, since it is larger than the sum of its proper divisors (342114502).

401440010 is a wasteful number, since it uses less digits than its factorization.

401440010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 401440010 is about 20035.9679077403. The cubic root of 401440010 is about 737.6894145290.

Adding to 401440010 its reverse (10044104), we get a palindrome (411484114).

The spelling of 401440010 in words is "four hundred one million, four hundred forty thousand, ten".