40047770 has 32 divisors (see below), whose sum is σ = 82885248. Its totient is φ = 13647168.

The previous prime is 40047751. The next prime is 40047779. The reversal of 40047770 is 7774004.

It is not an unprimeable number, because it can be changed into a prime (40047779) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10457 + ... + 13763.

It is an arithmetic number, because the mean of its divisors is an integer number (2590164).

Almost surely, 2^40047770 is an apocalyptic number.

40047770 is an abundant number, since it is smaller than the sum of its proper divisors (42837478).

40047770 is a wasteful number, since it uses less digits than its factorization.

40047770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494.

The product of its (nonzero) digits is 5488, while the sum is 29.

The square root of 40047770 is about 6328.3307435690. The cubic root of 40047770 is about 342.1312777601.

The spelling of 40047770 in words is "forty million, forty-seven thousand, seven hundred seventy".