47840390 has 32 divisors (see below), whose sum is σ = 93199680. Its totient is φ = 17576064.

The previous prime is 47840389. The next prime is 47840411. The reversal of 47840390 is 9304874.

It is a self number, because there is not a number n which added to its sum of digits gives 47840390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28967 + ... + 30573.

It is an arithmetic number, because the mean of its divisors is an integer number (2912490).

Almost surely, 2^47840390 is an apocalyptic number.

47840390 is a deficient number, since it is larger than the sum of its proper divisors (45359290).

47840390 is a wasteful number, since it uses less digits than its factorization.

47840390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 47840390 is about 6916.6747791117. The cubic root of 47840390 is about 363.0208509501.

The spelling of 47840390 in words is "forty-seven million, eight hundred forty thousand, three hundred ninety".