40205229 has 4 divisors (see below), whose sum is σ = 53606976. Its totient is φ = 26803484.

The previous prime is 40205213. The next prime is 40205237. The reversal of 40205229 is 92250204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40205229 - 2⁴ = 40205213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40205199 and 40205208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40205299) 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, 6700869 + ... + 6700874.

It is an arithmetic number, because the mean of its divisors is an integer number (13401744).

Almost surely, 2^40205229 is an apocalyptic number.

It is an amenable number.

40205229 is a deficient number, since it is larger than the sum of its proper divisors (13401747).

40205229 is a wasteful number, since it uses less digits than its factorization.

40205229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13401746.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 40205229 is about 6340.7593393851. The cubic root of 40205229 is about 342.5790862887.

The spelling of 40205229 in words is "forty million, two hundred five thousand, two hundred twenty-nine".