47455779 has 16 divisors (see below), whose sum is σ = 73128960. Its totient is φ = 26811840.

The previous prime is 47455777. The next prime is 47455781. The reversal of 47455779 is 97755474.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (47455777) and next prime (47455781).

It is not a de Polignac number, because 47455779 - 2¹ = 47455777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47455777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10827 + ... + 14564.

It is an arithmetic number, because the mean of its divisors is an integer number (4570560).

Almost surely, 2^47455779 is an apocalyptic number.

47455779 is a deficient number, since it is larger than the sum of its proper divisors (25673181).

47455779 is a wasteful number, since it uses less digits than its factorization.

47455779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25490.

The product of its digits is 1234800, while the sum is 48.

The square root of 47455779 is about 6888.8155005051. The cubic root of 47455779 is about 362.0454014462.

The spelling of 47455779 in words is "forty-seven million, four hundred fifty-five thousand, seven hundred seventy-nine".