47146905 has 48 divisors (see below), whose sum is σ = 89159616. Its totient is φ = 22907520.

The previous prime is 47146903. The next prime is 47146921. The reversal of 47146905 is 50964174.

47146905 is a nontrivial binomial coefficient, being equal to C(9711, 2).

It is not a de Polignac number, because 47146905 - 2¹ = 47146903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47146905.

It is not an unprimeable number, because it can be changed into a prime (47146903) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48070 + ... + 49040.

It is an arithmetic number, because the mean of its divisors is an integer number (1857492).

Almost surely, 2^47146905 is an apocalyptic number.

47146905 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

47146905 is the 9710-th triangular number.

It is an amenable number.

47146905 is a deficient number, since it is larger than the sum of its proper divisors (42012711).

47146905 is a wasteful number, since it uses less digits than its factorization.

47146905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 47146905 is about 6866.3603896096. The cubic root of 47146905 is about 361.2582131169.

The spelling of 47146905 in words is "forty-seven million, one hundred forty-six thousand, nine hundred five".