40481947 has 8 divisors (see below), whose sum is σ = 46760112. Its totient is φ = 34636800.

The previous prime is 40481929. The next prime is 40481953. The reversal of 40481947 is 74918404.

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

It is a de Polignac number, because none of the positive numbers 2^k-40481947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40481977) 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, 108054 + ... + 108427.

It is an arithmetic number, because the mean of its divisors is an integer number (5845014).

Almost surely, 2^40481947 is an apocalyptic number.

40481947 is a deficient number, since it is larger than the sum of its proper divisors (6278165).

40481947 is a wasteful number, since it uses less digits than its factorization.

40481947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216509.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 40481947 is about 6362.5424949465. The cubic root of 40481947 is about 343.3632391918.

It can be divided in two parts, 4048 and 1947, that added together give a palindrome (5995).

The spelling of 40481947 in words is "forty million, four hundred eighty-one thousand, nine hundred forty-seven".