400140104 has 32 divisors (see below), whose sum is σ = 923401920. Its totient is φ = 158296896.

The previous prime is 400140071. The next prime is 400140109. The reversal of 400140104 is 401041004.

It is a super-2 number, since 2×400140104² = 320224205658261632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (400140109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274094 + ... + 275549.

It is an arithmetic number, because the mean of its divisors is an integer number (28856310).

Almost surely, 2^400140104 is an apocalyptic number.

It is an amenable number.

400140104 is an abundant number, since it is smaller than the sum of its proper divisors (523261816).

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

400140104 is a wasteful number, since it uses less digits than its factorization.

400140104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549669 (or 549665 counting only the distinct ones).

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

The square root of 400140104 is about 20003.5022933485. The cubic root of 400140104 is about 736.8923142779.

Adding to 400140104 its reverse (401041004), we get a palindrome (801181108).

The spelling of 400140104 in words is "four hundred million, one hundred forty thousand, one hundred four".