49123644 has 12 divisors (see below), whose sum is σ = 114621864. Its totient is φ = 16374544.

The previous prime is 49123643. The next prime is 49123649. The reversal of 49123644 is 44632194.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49123643) 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, 2046807 + ... + 2046830.

It is an arithmetic number, because the mean of its divisors is an integer number (9551822).

Almost surely, 2^49123644 is an apocalyptic number.

It is an amenable number.

49123644 is an abundant number, since it is smaller than the sum of its proper divisors (65498220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49123644 is a wasteful number, since it uses less digits than its factorization.

49123644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4093644 (or 4093642 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 49123644 is about 7008.8261499341. The cubic root of 49123644 is about 366.2381024064.

The spelling of 49123644 in words is "forty-nine million, one hundred twenty-three thousand, six hundred forty-four".