47780783 has 4 divisors (see below), whose sum is σ = 48892008. Its totient is φ = 46669560.

The previous prime is 47780771. The next prime is 47780797. The reversal of 47780783 is 38708774.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47780783 - 2⁴ = 47780767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47780723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555548 + ... + 555633.

It is an arithmetic number, because the mean of its divisors is an integer number (12223002).

Almost surely, 2^47780783 is an apocalyptic number.

47780783 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

47780783 is a deficient number, since it is larger than the sum of its proper divisors (1111225).

47780783 is a wasteful number, since it uses less digits than its factorization.

47780783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111224.

The product of its (nonzero) digits is 263424, while the sum is 44.

The square root of 47780783 is about 6912.3645013845. The cubic root of 47780783 is about 362.8700190067.

The spelling of 47780783 in words is "forty-seven million, seven hundred eighty thousand, seven hundred eighty-three".