40478705 has 8 divisors (see below), whose sum is σ = 48929832. Its totient is φ = 32146048.

The previous prime is 40478699. The next prime is 40478707. The reversal of 40478705 is 50787404.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15358561 + 25120144 = 3919^2 + 5012^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40478705 - 2¹⁶ = 40413169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40478707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28862 + ... + 30231.

It is an arithmetic number, because the mean of its divisors is an integer number (6116229).

Almost surely, 2^40478705 is an apocalyptic number.

It is an amenable number.

40478705 is a deficient number, since it is larger than the sum of its proper divisors (8451127).

40478705 is a wasteful number, since it uses less digits than its factorization.

40478705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59235.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 40478705 is about 6362.2877174802. The cubic root of 40478705 is about 343.3540728562.

The spelling of 40478705 in words is "forty million, four hundred seventy-eight thousand, seven hundred five".