47969399 has 4 divisors (see below), whose sum is σ = 48874536. Its totient is φ = 47064264.

The previous prime is 47969377. The next prime is 47969401. The reversal of 47969399 is 99396974.

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 47969399 - 2⁸ = 47969143 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 (47969599) 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, 452489 + ... + 452594.

It is an arithmetic number, because the mean of its divisors is an integer number (12218634).

Almost surely, 2^47969399 is an apocalyptic number.

47969399 is a deficient number, since it is larger than the sum of its proper divisors (905137).

47969399 is an equidigital number, since it uses as much as digits as its factorization.

47969399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905136.

The product of its digits is 3306744, while the sum is 56.

The square root of 47969399 is about 6925.9944412337. The cubic root of 47969399 is about 363.3468719997.

The spelling of 47969399 in words is "forty-seven million, nine hundred sixty-nine thousand, three hundred ninety-nine".