40351229 has 4 divisors (see below), whose sum is σ = 40413120. Its totient is φ = 40289340.

The previous prime is 40351187. The next prime is 40351237. The reversal of 40351229 is 92215304.

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 40351229 - 2¹² = 40347133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40351198 and 40351207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40351249) 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, 29957 + ... + 31274.

It is an arithmetic number, because the mean of its divisors is an integer number (10103280).

Almost surely, 2^40351229 is an apocalyptic number.

It is an amenable number.

40351229 is a deficient number, since it is larger than the sum of its proper divisors (61891).

40351229 is an equidigital number, since it uses as much as digits as its factorization.

40351229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61890.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 40351229 is about 6352.2617231975. The cubic root of 40351229 is about 342.9932623122.

The spelling of 40351229 in words is "forty million, three hundred fifty-one thousand, two hundred twenty-nine".