49378729 has 3 divisors (see below), whose sum is σ = 49385757. Its totient is φ = 49371702.

The previous prime is 49378709. The next prime is 49378751. The reversal of 49378729 is 92787394.

The square root of 49378729 is 7027.

It is a perfect power (a square), and thus also a powerful number.

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.

It is not a de Polignac number, because 49378729 - 2²³ = 40990121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49378709) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3514 + ... + 10540.

It is an arithmetic number, because the mean of its divisors is an integer number (16461919).

Almost surely, 2^49378729 is an apocalyptic number.

49378729 is the 7027-th square number.

49378729 is the 3514-th centered octagonal number.

It is an amenable number.

49378729 is a deficient number, since it is larger than the sum of its proper divisors (7028).

49378729 is an frugal number, since it uses more digits than its factorization.

49378729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14054 (or 7027 counting only the distinct ones).

The product of its digits is 762048, while the sum is 49.

The cubic root of 49378729 is about 366.8709314567.

Multiplying 49378729 by its sum of digits (49), we get a square (2419557721 = 49189²).

The spelling of 49378729 in words is "forty-nine million, three hundred seventy-eight thousand, seven hundred twenty-nine".