400240834 has 8 divisors (see below), whose sum is σ = 686127168. Its totient is φ = 171531780.

The previous prime is 400240817. The next prime is 400240847. The reversal of 400240834 is 438042004.

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

It is a junction number, because it is equal to n+sod(n) for n = 400240799 and 400240808.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14294302 + ... + 14294329.

It is an arithmetic number, because the mean of its divisors is an integer number (85765896).

Almost surely, 2^400240834 is an apocalyptic number.

400240834 is a deficient number, since it is larger than the sum of its proper divisors (285886334).

400240834 is a wasteful number, since it uses less digits than its factorization.

400240834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28588640.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 400240834 is about 20006.0199440069. The cubic root of 400240834 is about 736.9541434009.

Adding to 400240834 its reverse (438042004), we get a palindrome (838282838).

The spelling of 400240834 in words is "four hundred million, two hundred forty thousand, eight hundred thirty-four".