400222535 has 4 divisors (see below), whose sum is σ = 480267048. Its totient is φ = 320178024.

The previous prime is 400222523. The next prime is 400222541. The reversal of 400222535 is 535222004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400222535 - 2²⁰ = 399173959 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 400222535.

It is a congruent number.

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, 40022249 + ... + 40022258.

It is an arithmetic number, because the mean of its divisors is an integer number (120066762).

Almost surely, 2^400222535 is an apocalyptic number.

400222535 is a deficient number, since it is larger than the sum of its proper divisors (80044513).

400222535 is an equidigital number, since it uses as much as digits as its factorization.

400222535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80044512.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 400222535 is about 20005.5626014366. The cubic root of 400222535 is about 736.9429120553.

Adding to 400222535 its reverse (535222004), we get a palindrome (935444539).

The spelling of 400222535 in words is "four hundred million, two hundred twenty-two thousand, five hundred thirty-five".