40919849 has 4 divisors (see below), whose sum is σ = 40946064. Its totient is φ = 40893636.

The previous prime is 40919839. The next prime is 40919873. The reversal of 40919849 is 94891904.

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 a de Polignac number, because none of the positive numbers 2^k-40919849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40919839) 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, 10607 + ... + 13940.

It is an arithmetic number, because the mean of its divisors is an integer number (10236516).

Almost surely, 2^40919849 is an apocalyptic number.

It is an amenable number.

40919849 is a deficient number, since it is larger than the sum of its proper divisors (26215).

40919849 is a wasteful number, since it uses less digits than its factorization.

40919849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26214.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 40919849 is about 6396.8624340375. The cubic root of 40919849 is about 344.5968798486.

The spelling of 40919849 in words is "forty million, nine hundred nineteen thousand, eight hundred forty-nine".