47779470 has 80 divisors (see below), whose sum is σ = 130714848. Its totient is φ = 12519360.

The previous prime is 47779429. The next prime is 47779481. The reversal of 47779470 is 7497774.

47779470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 48927 + ... + 49893.

Almost surely, 2^47779470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47779470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65357424).

47779470 is an abundant number, since it is smaller than the sum of its proper divisors (82935378).

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

47779470 is a wasteful number, since it uses less digits than its factorization.

47779470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 345744, while the sum is 45.

The square root of 47779470 is about 6912.2695259951. The cubic root of 47779470 is about 362.8666951272.

The spelling of 47779470 in words is "forty-seven million, seven hundred seventy-nine thousand, four hundred seventy".