400631041 has 8 divisors (see below), whose sum is σ = 406062720. Its totient is φ = 395208528.

The previous prime is 400631029. The next prime is 400631047. The reversal of 400631041 is 140136004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400631041 - 2¹⁵ = 400598273 is a prime.

It is a super-3 number, since 3×400631041³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400631047) 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, 175590 + ... + 177856.

It is an arithmetic number, because the mean of its divisors is an integer number (50757840).

Almost surely, 2^400631041 is an apocalyptic number.

It is an amenable number.

400631041 is a deficient number, since it is larger than the sum of its proper divisors (5431679).

400631041 is a wasteful number, since it uses less digits than its factorization.

400631041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4583.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 400631041 is about 20015.7698078290. The cubic root of 400631041 is about 737.1935586394.

Adding to 400631041 its reverse (140136004), we get a palindrome (540767045).

The spelling of 400631041 in words is "four hundred million, six hundred thirty-one thousand, forty-one".