10144639 has 4 divisors (see below), whose sum is σ = 10151856. Its totient is φ = 10137424.

The previous prime is 10144609. The next prime is 10144649. The reversal of 10144639 is 93644101.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 93644101 = 71 ⋅1318931.

It is a cyclic number.

It is not a de Polignac number, because 10144639 - 2¹³ = 10136447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10144609) 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, 739 + ... + 4564.

It is an arithmetic number, because the mean of its divisors is an integer number (2537964).

Almost surely, 2^10144639 is an apocalyptic number.

10144639 is a deficient number, since it is larger than the sum of its proper divisors (7217).

10144639 is an equidigital number, since it uses as much as digits as its factorization.

10144639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7216.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 10144639 is about 3185.0649914876. The cubic root of 10144639 is about 216.4772184887.

The spelling of 10144639 in words is "ten million, one hundred forty-four thousand, six hundred thirty-nine".