47365409 has 12 divisors (see below), whose sum is σ = 59337684. Its totient is φ = 37475424.

The previous prime is 47365399. The next prime is 47365433. The reversal of 47365409 is 90456374.

47365409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4528384 + 42837025 = 2128^2 + 6545^2 .

It is not a de Polignac number, because 47365409 - 2¹² = 47361313 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47365469) 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 11 ways as a sum of consecutive naturals, for example, 36542 + ... + 37815.

It is an arithmetic number, because the mean of its divisors is an integer number (4944807).

Almost surely, 2^47365409 is an apocalyptic number.

47365409 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

47365409 is a deficient number, since it is larger than the sum of its proper divisors (11972275).

47365409 is a wasteful number, since it uses less digits than its factorization.

47365409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74384 (or 74377 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 47365409 is about 6882.2531920876. The cubic root of 47365409 is about 361.8154411622.

It can be divided in two parts, 47365 and 409, that added together give a palindrome (47774).

The spelling of 47365409 in words is "forty-seven million, three hundred sixty-five thousand, four hundred nine".