40540479 has 32 divisors (see below), whose sum is σ = 63360000. Its totient is φ = 22581504.

The previous prime is 40540453. The next prime is 40540483. The reversal of 40540479 is 97404504.

It is a happy number.

It is not a de Polignac number, because 40540479 - 2⁵ = 40540447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40540499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203622 + ... + 203820.

It is an arithmetic number, because the mean of its divisors is an integer number (1980000).

Almost surely, 2^40540479 is an apocalyptic number.

40540479 is a deficient number, since it is larger than the sum of its proper divisors (22819521).

40540479 is a wasteful number, since it uses less digits than its factorization.

40540479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 40540479 is about 6367.1405670049. The cubic root of 40540479 is about 343.5286467383.

The spelling of 40540479 in words is "forty million, five hundred forty thousand, four hundred seventy-nine".