47770399 has 4 divisors (see below), whose sum is σ = 47845336. Its totient is φ = 47695464.

The previous prime is 47770369. The next prime is 47770417. The reversal of 47770399 is 99307774.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47770399 - 2⁷ = 47770271 is a prime.

It is a super-2 number, since 2×47770399² = 4564022041238402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47770319) 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, 36504 + ... + 37789.

It is an arithmetic number, because the mean of its divisors is an integer number (11961334).

Almost surely, 2^47770399 is an apocalyptic number.

47770399 is a deficient number, since it is larger than the sum of its proper divisors (74937).

47770399 is an equidigital number, since it uses as much as digits as its factorization.

47770399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74936.

The product of its (nonzero) digits is 333396, while the sum is 46.

The square root of 47770399 is about 6911.6133427732. The cubic root of 47770399 is about 362.8437300886.

It can be divided in two parts, 477 and 70399, that added together give a triangular number (70876 = T₃₇₆).

The spelling of 47770399 in words is "forty-seven million, seven hundred seventy thousand, three hundred ninety-nine".