8400053779 has 8 divisors (see below), whose sum is σ = 9181230800. Its totient is φ = 7638165216.

The previous prime is 8400053773. The next prime is 8400053791. The reversal of 8400053779 is 9773500048.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8400053779 - 2⁹ = 8400053267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8400053773) 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, 4821204 + ... + 4822945.

It is an arithmetic number, because the mean of its divisors is an integer number (1147653850).

Almost surely, 2^8400053779 is an apocalyptic number.

8400053779 is a deficient number, since it is larger than the sum of its proper divisors (781177021).

8400053779 is a wasteful number, since it uses less digits than its factorization.

8400053779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9644229.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 8400053779 is about 91651.8072871452. The cubic root of 8400053779 is about 2032.7970517776.

The spelling of 8400053779 in words is "eight billion, four hundred million, fifty-three thousand, seven hundred seventy-nine".