47051979 has 8 divisors (see below), whose sum is σ = 67561872. Its totient is φ = 28955040.

The previous prime is 47051947. The next prime is 47051989. The reversal of 47051979 is 97915074.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47051979 - 2⁵ = 47051947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47051979.

It is not an unprimeable number, because it can be changed into a prime (47051909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603192 + ... + 603269.

It is an arithmetic number, because the mean of its divisors is an integer number (8445234).

Almost surely, 2^47051979 is an apocalyptic number.

47051979 is a deficient number, since it is larger than the sum of its proper divisors (20509893).

47051979 is a wasteful number, since it uses less digits than its factorization.

47051979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206477.

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 47051979 is about 6859.4445110373. Note that the first 3 decimals coincide. The cubic root of 47051979 is about 361.0155967100.

The spelling of 47051979 in words is "forty-seven million, fifty-one thousand, nine hundred seventy-nine".