40221436 has 12 divisors (see below), whose sum is σ = 71034040. Its totient is φ = 19926000.

The previous prime is 40221431. The next prime is 40221437. The reversal of 40221436 is 63412204.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40221431) 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, 45690 + ... + 46561.

Almost surely, 2^40221436 is an apocalyptic number.

It is an amenable number.

40221436 is a deficient number, since it is larger than the sum of its proper divisors (30812604).

40221436 is a wasteful number, since it uses less digits than its factorization.

40221436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92364 (or 92362 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 40221436 is about 6342.0372121267. The cubic root of 40221436 is about 342.6251120878.

The spelling of 40221436 in words is "forty million, two hundred twenty-one thousand, four hundred thirty-six".