44091899 has 4 divisors (see below), whose sum is σ = 45117336. Its totient is φ = 43066464.

The previous prime is 44091881. The next prime is 44091907. The reversal of 44091899 is 99819044.

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 44091899 - 2⁸ = 44091643 is a prime.

It is a super-3 number, since 3×44091899³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44091199) 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, 512654 + ... + 512739.

It is an arithmetic number, because the mean of its divisors is an integer number (11279334).

Almost surely, 2^44091899 is an apocalyptic number.

44091899 is a deficient number, since it is larger than the sum of its proper divisors (1025437).

44091899 is a wasteful number, since it uses less digits than its factorization.

44091899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025436.

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

The square root of 44091899 is about 6640.1731152132. The cubic root of 44091899 is about 353.2804470704.

The spelling of 44091899 in words is "forty-four million, ninety-one thousand, eight hundred ninety-nine".