47207979 has 24 divisors (see below), whose sum is σ = 83926752. Its totient is φ = 24900480.

The previous prime is 47207939. The next prime is 47207981. The reversal of 47207979 is 97970274.

It is a happy number.

It is not a de Polignac number, because 47207979 - 2⁹ = 47207467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47207939) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28002 + ... + 29639.

It is an arithmetic number, because the mean of its divisors is an integer number (3496948).

Almost surely, 2^47207979 is an apocalyptic number.

47207979 is a deficient number, since it is larger than the sum of its proper divisors (36718773).

47207979 is a wasteful number, since it uses less digits than its factorization.

47207979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57667 (or 57664 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The square root of 47207979 is about 6870.8062845637. The cubic root of 47207979 is about 361.4141368477.

The spelling of 47207979 in words is "forty-seven million, two hundred seven thousand, nine hundred seventy-nine".