40699849 has 4 divisors (see below), whose sum is σ = 40770964. Its totient is φ = 40628736.

The previous prime is 40699829. The next prime is 40699861. The reversal of 40699849 is 94899604.

40699849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39778249 + 921600 = 6307^2 + 960^2 .

It is a cyclic number.

It is not a de Polignac number, because 40699849 - 2¹¹ = 40697801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40699829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34692 + ... + 35845.

It is an arithmetic number, because the mean of its divisors is an integer number (10192741).

Almost surely, 2^40699849 is an apocalyptic number.

It is an amenable number.

40699849 is a deficient number, since it is larger than the sum of its proper divisors (71115).

40699849 is an equidigital number, since it uses as much as digits as its factorization.

40699849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71114.

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 40699849 is about 6379.6433285882. The cubic root of 40699849 is about 343.9782103784.

The spelling of 40699849 in words is "forty million, six hundred ninety-nine thousand, eight hundred forty-nine".