47164405 has 8 divisors (see below), whose sum is σ = 56779992. Its totient is φ = 37609728.

The previous prime is 47164399. The next prime is 47164433. The reversal of 47164405 is 50446174.

It can be written as a sum of positive squares in 4 ways, for example, as 3617604 + 43546801 = 1902^2 + 6599^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 47164405 - 2²³ = 38775797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13504 + ... + 16633.

It is an arithmetic number, because the mean of its divisors is an integer number (7097499).

Almost surely, 2^47164405 is an apocalyptic number.

It is an amenable number.

47164405 is a deficient number, since it is larger than the sum of its proper divisors (9615587).

47164405 is a wasteful number, since it uses less digits than its factorization.

47164405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30455.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 47164405 is about 6867.6346000643. The cubic root of 47164405 is about 361.3029048925.

The spelling of 47164405 in words is "forty-seven million, one hundred sixty-four thousand, four hundred five".