47109090 has 96 divisors (see below), whose sum is σ = 133626240. Its totient is φ = 10596096.

The previous prime is 47109089. The next prime is 47109121. The reversal of 47109090 is 9090174.

It is a Harshad number since it is a multiple of its sum of digits (30).

47109090 is a modest number, since divided by 9090 gives 4710 as remainder.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 107091 + ... + 107529.

It is an arithmetic number, because the mean of its divisors is an integer number (1391940).

Almost surely, 2^47109090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47109090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66813120).

47109090 is an abundant number, since it is smaller than the sum of its proper divisors (86517150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47109090 is a wasteful number, since it uses less digits than its factorization.

47109090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 47109090 is about 6863.6061949969. The cubic root of 47109090 is about 361.1616027929.

The spelling of 47109090 in words is "forty-seven million, one hundred nine thousand, ninety".