101044649 has 4 divisors (see below), whose sum is σ = 101557764. Its totient is φ = 100531536.

The previous prime is 101044621. The next prime is 101044663. The reversal of 101044649 is 946440101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97377424 + 3667225 = 9868^2 + 1915^2 .

It is a cyclic number.

It is not a de Polignac number, because 101044649 - 2²⁴ = 84267433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101044949) 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, 256262 + ... + 256655.

It is an arithmetic number, because the mean of its divisors is an integer number (25389441).

Almost surely, 2^101044649 is an apocalyptic number.

It is an amenable number.

101044649 is a deficient number, since it is larger than the sum of its proper divisors (513115).

101044649 is an equidigital number, since it uses as much as digits as its factorization.

101044649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513114.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 101044649 is about 10052.0967464505. The cubic root of 101044649 is about 465.7695647029.

It can be divided in two parts, 101044 and 649, that multiplied together give a palindrome (65577556).

The spelling of 101044649 in words is "one hundred one million, forty-four thousand, six hundred forty-nine".