40780994 has 8 divisors (see below), whose sum is σ = 64769868. Its totient is φ = 19191040.

The previous prime is 40780969. The next prime is 40781003. The reversal of 40780994 is 49908704.

It can be written as a sum of positive squares in 2 ways, for example, as 40768225 + 12769 = 6385^2 + 113^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599687 + ... + 599754.

Almost surely, 2^40780994 is an apocalyptic number.

40780994 is a deficient number, since it is larger than the sum of its proper divisors (23988874).

40780994 is a wasteful number, since it uses less digits than its factorization.

40780994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199460.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 40780994 is about 6385.9998434075. Note that the first 3 decimals coincide. The cubic root of 40780994 is about 344.2066598955.

The spelling of 40780994 in words is "forty million, seven hundred eighty thousand, nine hundred ninety-four".