47720399 has 8 divisors (see below), whose sum is σ = 49620000. Its totient is φ = 45837792.

The previous prime is 47720363. The next prime is 47720401. The reversal of 47720399 is 99302774.

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

It is a cyclic number.

It is not a de Polignac number, because 47720399 - 2⁸ = 47720143 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 (47720359) 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, 1637 + ... + 9905.

It is an arithmetic number, because the mean of its divisors is an integer number (6202500).

Almost surely, 2^47720399 is an apocalyptic number.

47720399 is a deficient number, since it is larger than the sum of its proper divisors (1899601).

47720399 is a wasteful number, since it uses less digits than its factorization.

47720399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8497.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 47720399 is about 6907.9952953082. The cubic root of 47720399 is about 362.7170929506.

The spelling of 47720399 in words is "forty-seven million, seven hundred twenty thousand, three hundred ninety-nine".