40099045 has 16 divisors (see below), whose sum is σ = 55244160. Its totient is φ = 27370944.

The previous prime is 40099001. The next prime is 40099049. The reversal of 40099045 is 54099004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40099045 - 2⁷ = 40098917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40098998 and 40099016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40099049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5514 + ... + 10516.

It is an arithmetic number, because the mean of its divisors is an integer number (3452760).

Almost surely, 2^40099045 is an apocalyptic number.

It is an amenable number.

40099045 is a deficient number, since it is larger than the sum of its proper divisors (15145115).

40099045 is a wasteful number, since it uses less digits than its factorization.

40099045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5244.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 40099045 is about 6332.3806739646. The cubic root of 40099045 is about 342.2772309526.

The spelling of 40099045 in words is "forty million, ninety-nine thousand, forty-five".