40490005 has 32 divisors (see below), whose sum is σ = 54432000. Its totient is φ = 28756992.

The previous prime is 40489987. The next prime is 40490011. The reversal of 40490005 is 50009404.

It is not a de Polignac number, because 40490005 - 2²³ = 32101397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 271671 + ... + 271819.

It is an arithmetic number, because the mean of its divisors is an integer number (1701000).

Almost surely, 2^40490005 is an apocalyptic number.

It is an amenable number.

40490005 is a deficient number, since it is larger than the sum of its proper divisors (13941995).

40490005 is a wasteful number, since it uses less digits than its factorization.

40490005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 40490005 is about 6363.1757008588. The cubic root of 40490005 is about 343.3860200248.

Adding to 40490005 its reverse (50009404), we get a palindrome (90499409).

It can be divided in two parts, 404 and 90005, that added together give a palindrome (90409).

The spelling of 40490005 in words is "forty million, four hundred ninety thousand, five".