47323777 has 4 divisors (see below), whose sum is σ = 48602836. Its totient is φ = 46044720.

The previous prime is 47323769. The next prime is 47323781. The reversal of 47323777 is 77732374.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77732374 = 2 ⋅38866187.

It can be written as a sum of positive squares in 2 ways, for example, as 42107121 + 5216656 = 6489^2 + 2284^2 .

It is a cyclic number.

It is not a de Polignac number, because 47323777 - 2³ = 47323769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47323747) 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, 639474 + ... + 639547.

It is an arithmetic number, because the mean of its divisors is an integer number (12150709).

Almost surely, 2^47323777 is an apocalyptic number.

It is an amenable number.

47323777 is a deficient number, since it is larger than the sum of its proper divisors (1279059).

47323777 is a wasteful number, since it uses less digits than its factorization.

47323777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279058.

The product of its digits is 172872, while the sum is 40.

The square root of 47323777 is about 6879.2279363312. The cubic root of 47323777 is about 361.7094037524.

The spelling of 47323777 in words is "forty-seven million, three hundred twenty-three thousand, seven hundred seventy-seven".