40405006 has 4 divisors (see below), whose sum is σ = 60607512. Its totient is φ = 20202502.

The previous prime is 40405003. The next prime is 40405009. The reversal of 40405006 is 60050404.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (40405003) and next prime (40405009).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40405003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101250 + ... + 10101253.

It is an arithmetic number, because the mean of its divisors is an integer number (15151878).

Almost surely, 2^40405006 is an apocalyptic number.

40405006 is a deficient number, since it is larger than the sum of its proper divisors (20202506).

40405006 is a wasteful number, since it uses less digits than its factorization.

40405006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20202505.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 40405006 is about 6356.4932156025. The cubic root of 40405006 is about 343.1455663113.

The spelling of 40405006 in words is "forty million, four hundred five thousand, six".