40699949 has 4 divisors (see below), whose sum is σ = 42469536. Its totient is φ = 38930364.

The previous prime is 40699927. The next prime is 40699951. The reversal of 40699949 is 94999604.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40699949 - 2²⁰ = 39651373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40699897 and 40699906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40609949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884759 + ... + 884804.

It is an arithmetic number, because the mean of its divisors is an integer number (10617384).

Almost surely, 2^40699949 is an apocalyptic number.

It is an amenable number.

40699949 is a deficient number, since it is larger than the sum of its proper divisors (1769587).

40699949 is a wasteful number, since it uses less digits than its factorization.

40699949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769586.

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 40699949 is about 6379.6511660121. The cubic root of 40699949 is about 343.9784920977.

The spelling of 40699949 in words is "forty million, six hundred ninety-nine thousand, nine hundred forty-nine".