53819979 has 8 divisors (see below), whose sum is σ = 72395472. Its totient is φ = 35562240.

The previous prime is 53819959. The next prime is 53819993. The reversal of 53819979 is 97991835.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53819979 - 2⁵ = 53819947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53819929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79042 + ... + 79719.

It is an arithmetic number, because the mean of its divisors is an integer number (9049434).

Almost surely, 2^53819979 is an apocalyptic number.

53819979 is a deficient number, since it is larger than the sum of its proper divisors (18575493).

53819979 is a wasteful number, since it uses less digits than its factorization.

53819979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158877.

The product of its digits is 612360, while the sum is 51.

The square root of 53819979 is about 7336.2101251259. The cubic root of 53819979 is about 377.5558246755. Note that the first 3 decimals are identical.

The spelling of 53819979 in words is "fifty-three million, eight hundred nineteen thousand, nine hundred seventy-nine".