44142747 has 16 divisors (see below), whose sum is σ = 64341120. Its totient is φ = 26697600.

The previous prime is 44142733. The next prime is 44142793. The reversal of 44142747 is 74724144.

It is a happy number.

It is not a de Polignac number, because 44142747 - 2⁴ = 44142731 is a prime.

It is a super-2 number, since 2×44142747² = 3897164225412018, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (44142247) 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 15 ways as a sum of consecutive naturals, for example, 19347 + ... + 21507.

It is an arithmetic number, because the mean of its divisors is an integer number (4021320).

Almost surely, 2^44142747 is an apocalyptic number.

44142747 is a deficient number, since it is larger than the sum of its proper divisors (20198373).

44142747 is a wasteful number, since it uses less digits than its factorization.

44142747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2794.

The product of its digits is 25088, while the sum is 33.

The square root of 44142747 is about 6644.0008278145. Note that the first 3 decimals coincide. The cubic root of 44142747 is about 353.4161991672.

The spelling of 44142747 in words is "forty-four million, one hundred forty-two thousand, seven hundred forty-seven".