40343994 has 20 divisors (see below), whose sum is σ = 90400794. Its totient is φ = 13447944.

The previous prime is 40343987. The next prime is 40343999. The reversal of 40343994 is 49934304.

It can be written as a sum of positive squares in only one way, i.e., 20657025 + 19686969 = 4545^2 + 4437^2 .

It is not an unprimeable number, because it can be changed into a prime (40343999) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 124357 + ... + 124680.

Almost surely, 2^40343994 is an apocalyptic number.

40343994 is an abundant number, since it is smaller than the sum of its proper divisors (50056800).

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

40343994 is a wasteful number, since it uses less digits than its factorization.

40343994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249051 (or 249042 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 40343994 is about 6351.6922154651. The cubic root of 40343994 is about 342.9727614530.

The spelling of 40343994 in words is "forty million, three hundred forty-three thousand, nine hundred ninety-four".