2154406047 has 8 divisors (see below), whose sum is σ = 2873420160. Its totient is φ = 1435831320.

The previous prime is 2154406043. The next prime is 2154406057. The reversal of 2154406047 is 7406044512.

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

It is not a de Polignac number, because 2154406047 - 2² = 2154406043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2154405999 and 2154406017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154406043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98229 + ... + 118142.

It is an arithmetic number, because the mean of its divisors is an integer number (359177520).

Almost surely, 2^2154406047 is an apocalyptic number.

2154406047 is a deficient number, since it is larger than the sum of its proper divisors (719014113).

2154406047 is a wasteful number, since it uses less digits than its factorization.

2154406047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219693.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 2154406047 is about 46415.5797873947. The cubic root of 2154406047 is about 1291.5439413074.

The spelling of 2154406047 in words is "two billion, one hundred fifty-four million, four hundred six thousand, forty-seven".