400045234 has 8 divisors (see below), whose sum is σ = 600346368. Its totient is φ = 199929780.

The previous prime is 400045229. The next prime is 400045237. The reversal of 400045234 is 432540004.

It is a happy number.

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

It is a super-2 number, since 2×400045234² = 320072378492229512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (400045237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40902 + ... + 49729.

It is an arithmetic number, because the mean of its divisors is an integer number (75043296).

Almost surely, 2^400045234 is an apocalyptic number.

400045234 is a deficient number, since it is larger than the sum of its proper divisors (200301134).

400045234 is a wasteful number, since it uses less digits than its factorization.

400045234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92840.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 400045234 is about 20001.1308180313. The cubic root of 400045234 is about 736.8340725947.

Adding to 400045234 its reverse (432540004), we get a palindrome (832585238).

The spelling of 400045234 in words is "four hundred million, forty-five thousand, two hundred thirty-four".