400133705 has 16 divisors (see below), whose sum is σ = 492191040. Its totient is φ = 312113088.

The previous prime is 400133663. The next prime is 400133753. The reversal of 400133705 is 507331004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 400133705 - 2⁸ = 400133449 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156326 + ... + 158864.

It is an arithmetic number, because the mean of its divisors is an integer number (30761940).

Almost surely, 2^400133705 is an apocalyptic number.

It is an amenable number.

400133705 is a deficient number, since it is larger than the sum of its proper divisors (92057335).

400133705 is a wasteful number, since it uses less digits than its factorization.

400133705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 400133705 is about 20003.3423457181. The cubic root of 400133705 is about 736.8883861545. Note that the first 3 decimals are identical.

Adding to 400133705 its reverse (507331004), we get a palindrome (907464709).

The spelling of 400133705 in words is "four hundred million, one hundred thirty-three thousand, seven hundred five".