40478770 has 16 divisors (see below), whose sum is σ = 73156608. Its totient is φ = 16126000.

The previous prime is 40478749. The next prime is 40478771. The reversal of 40478770 is 7787404.

It is not an unprimeable number, because it can be changed into a prime (40478771) 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 7 ways as a sum of consecutive naturals, for example, 5554 + ... + 10573.

It is an arithmetic number, because the mean of its divisors is an integer number (4572288).

Almost surely, 2^40478770 is an apocalyptic number.

40478770 is a deficient number, since it is larger than the sum of its proper divisors (32677838).

40478770 is a wasteful number, since it uses less digits than its factorization.

40478770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16385.

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 40478770 is about 6362.2928257036. The cubic root of 40478770 is about 343.3542566401.

The spelling of 40478770 in words is "forty million, four hundred seventy-eight thousand, seven hundred seventy".