401040451 has 12 divisors (see below), whose sum is σ = 467680440. Its totient is φ = 342891360.

The previous prime is 401040427. The next prime is 401040457. The reversal of 401040451 is 154040104.

It is not a de Polignac number, because 401040451 - 2¹⁵ = 401007683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401040457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10036 + ... + 30046.

It is an arithmetic number, because the mean of its divisors is an integer number (38973370).

Almost surely, 2^401040451 is an apocalyptic number.

401040451 is a deficient number, since it is larger than the sum of its proper divisors (66639989).

401040451 is a wasteful number, since it uses less digits than its factorization.

401040451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20434 (or 20427 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 401040451 is about 20025.9943823022. The cubic root of 401040451 is about 737.4445889998. Note that the first 3 decimals are identical.

Adding to 401040451 its reverse (154040104), we get a palindrome (555080555).

The spelling of 401040451 in words is "four hundred one million, forty thousand, four hundred fifty-one".