44142919 has 4 divisors (see below), whose sum is σ = 44306080. Its totient is φ = 43979760.

The previous prime is 44142913. The next prime is 44142949. The reversal of 44142919 is 91924144.

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 44142919 - 2²¹ = 42045767 is a prime.

It is a super-2 number, since 2×44142919² = 3897194595681122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44142913) 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, 81174 + ... + 81715.

It is an arithmetic number, because the mean of its divisors is an integer number (11076520).

Almost surely, 2^44142919 is an apocalyptic number.

44142919 is a deficient number, since it is larger than the sum of its proper divisors (163161).

44142919 is a wasteful number, since it uses less digits than its factorization.

44142919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163160.

The product of its digits is 10368, while the sum is 34.

The square root of 44142919 is about 6644.0137718099. The cubic root of 44142919 is about 353.4166581894.

The spelling of 44142919 in words is "forty-four million, one hundred forty-two thousand, nine hundred nineteen".