400315841 has 8 divisors (see below), whose sum is σ = 410594184. Its totient is φ = 390062080.

The previous prime is 400315801. The next prime is 400315843. The reversal of 400315841 is 148513004.

It can be written as a sum of positive squares in 4 ways, for example, as 89851441 + 310464400 = 9479^2 + 17620^2 .

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 400315841 - 2⁶ = 400315777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400315841.

It is not an unprimeable number, because it can be changed into a prime (400315843) 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, 29441 + ... + 40833.

It is an arithmetic number, because the mean of its divisors is an integer number (51324273).

Almost surely, 2^400315841 is an apocalyptic number.

400315841 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

400315841 is a deficient number, since it is larger than the sum of its proper divisors (10278343).

400315841 is a wasteful number, since it uses less digits than its factorization.

400315841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12291.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 400315841 is about 20007.8944669348. The cubic root of 400315841 is about 737.0001767405. Note that the first 3 decimals are identical.

Adding to 400315841 its reverse (148513004), we get a palindrome (548828845).

The spelling of 400315841 in words is "four hundred million, three hundred fifteen thousand, eight hundred forty-one".