40055407 has 4 divisors (see below), whose sum is σ = 45777616. Its totient is φ = 34333200.

The previous prime is 40055369. The next prime is 40055437. The reversal of 40055407 is 70455004.

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

It is a cyclic number.

It is not a de Polignac number, because 40055407 - 2¹¹ = 40053359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40055437) 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, 2861094 + ... + 2861107.

It is an arithmetic number, because the mean of its divisors is an integer number (11444404).

Almost surely, 2^40055407 is an apocalyptic number.

40055407 is a deficient number, since it is larger than the sum of its proper divisors (5722209).

40055407 is an equidigital number, since it uses as much as digits as its factorization.

40055407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5722208.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 40055407 is about 6328.9341124711. The cubic root of 40055407 is about 342.1530242102.

The spelling of 40055407 in words is "forty million, fifty-five thousand, four hundred seven".