40229946 has 40 divisors (see below), whose sum is σ = 91057824. Its totient is φ = 13274280.

The previous prime is 40229933. The next prime is 40229953. The reversal of 40229946 is 64992204.

It is a self number, because there is not a number n which added to its sum of digits gives 40229946.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15481 + ... + 17891.

Almost surely, 2^40229946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40229946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45528912).

40229946 is an abundant number, since it is smaller than the sum of its proper divisors (50827878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40229946 is a wasteful number, since it uses less digits than its factorization.

40229946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528 (or 2519 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 40229946 is about 6342.7080967044. The cubic root of 40229946 is about 342.6492744448.

The spelling of 40229946 in words is "forty million, two hundred twenty-nine thousand, nine hundred forty-six".