40455406 has 8 divisors (see below), whose sum is σ = 62775720. Its totient is φ = 19530168.

The previous prime is 40455361. The next prime is 40455407. The reversal of 40455406 is 60455404.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40455407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348696 + ... + 348811.

It is an arithmetic number, because the mean of its divisors is an integer number (7846965).

Almost surely, 2^40455406 is an apocalyptic number.

40455406 is a deficient number, since it is larger than the sum of its proper divisors (22320314).

40455406 is a wasteful number, since it uses less digits than its factorization.

40455406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697538.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 40455406 is about 6360.4564301629. The cubic root of 40455406 is about 343.2881835456.

The spelling of 40455406 in words is "forty million, four hundred fifty-five thousand, four hundred six".