40238394 has 16 divisors (see below), whose sum is σ = 91973568. Its totient is φ = 11496672.

The previous prime is 40238389. The next prime is 40238423. The reversal of 40238394 is 49383204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478987 + ... + 479070.

It is an arithmetic number, because the mean of its divisors is an integer number (5748348).

Almost surely, 2^40238394 is an apocalyptic number.

40238394 is an abundant number, since it is smaller than the sum of its proper divisors (51735174).

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

40238394 is a wasteful number, since it uses less digits than its factorization.

40238394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958069.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 40238394 is about 6343.3740233412. The cubic root of 40238394 is about 342.6732573958.

The spelling of 40238394 in words is "forty million, two hundred thirty-eight thousand, three hundred ninety-four".