406137233 has 4 divisors (see below), whose sum is σ = 407301300. Its totient is φ = 404973168.

The previous prime is 406137223. The next prime is 406137239. The reversal of 406137233 is 332731604.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 218803264 + 187333969 = 14792^2 + 13687^2 .

It is a cyclic number.

It is not a de Polignac number, because 406137233 - 2²⁰ = 405088657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 406137196 and 406137205.

It is not an unprimeable number, because it can be changed into a prime (406137239) 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, 581510 + ... + 582207.

It is an arithmetic number, because the mean of its divisors is an integer number (101825325).

Almost surely, 2^406137233 is an apocalyptic number.

It is an amenable number.

406137233 is a deficient number, since it is larger than the sum of its proper divisors (1164067).

406137233 is a wasteful number, since it uses less digits than its factorization.

406137233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164066.

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 406137233 is about 20152.8467716102. The cubic root of 406137233 is about 740.5554832127. Note that the first 3 decimals are identical.

Adding to 406137233 its reverse (332731604), we get a palindrome (738868837).

The spelling of 406137233 in words is "four hundred six million, one hundred thirty-seven thousand, two hundred thirty-three".