40297226 has 4 divisors (see below), whose sum is σ = 60445842. Its totient is φ = 20148612.

The previous prime is 40297223. The next prime is 40297237. The reversal of 40297226 is 62279204.

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

It can be written as a sum of positive squares in only one way, i.e., 34798201 + 5499025 = 5899^2 + 2345^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40297192 and 40297201.

It is not an unprimeable number, because it can be changed into a prime (40297223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10074305 + ... + 10074308.

Almost surely, 2^40297226 is an apocalyptic number.

40297226 is a deficient number, since it is larger than the sum of its proper divisors (20148616).

40297226 is a wasteful number, since it uses less digits than its factorization.

40297226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20148615.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 40297226 is about 6348.0096093185. The cubic root of 40297226 is about 342.8401820148.

The spelling of 40297226 in words is "forty million, two hundred ninety-seven thousand, two hundred twenty-six".