53923729 has 4 divisors (see below), whose sum is σ = 56761840. Its totient is φ = 51085620.

The previous prime is 53923697. The next prime is 53923739. The reversal of 53923729 is 92732935.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53923729 - 2⁵ = 53923697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53923691 and 53923700.

It is not an unprimeable number, because it can be changed into a prime (53923739) 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, 1419027 + ... + 1419064.

It is an arithmetic number, because the mean of its divisors is an integer number (14190460).

Almost surely, 2^53923729 is an apocalyptic number.

It is an amenable number.

53923729 is a deficient number, since it is larger than the sum of its proper divisors (2838111).

53923729 is a wasteful number, since it uses less digits than its factorization.

53923729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838110.

The product of its digits is 102060, while the sum is 40.

The square root of 53923729 is about 7343.2778103515. The cubic root of 53923729 is about 377.7982766046.

The spelling of 53923729 in words is "fifty-three million, nine hundred twenty-three thousand, seven hundred twenty-nine".