40840754 has 4 divisors (see below), whose sum is σ = 61261134. Its totient is φ = 20420376.

The previous prime is 40840753. The next prime is 40840757. The reversal of 40840754 is 45704804.

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., 40615129 + 225625 = 6373^2 + 475^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40840754.

It is not an unprimeable number, because it can be changed into a prime (40840753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10210187 + ... + 10210190.

Almost surely, 2^40840754 is an apocalyptic number.

40840754 is a deficient number, since it is larger than the sum of its proper divisors (20420380).

40840754 is a wasteful number, since it uses less digits than its factorization.

40840754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20420379.

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 40840754 is about 6390.6771159244. The cubic root of 40840754 is about 344.3747099974.

The spelling of 40840754 in words is "forty million, eight hundred forty thousand, seven hundred fifty-four".