47691499 has 2 divisors, whose sum is σ = 47691500. Its totient is φ = 47691498.

The previous prime is 47691491. The next prime is 47691559. The reversal of 47691499 is 99419674.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47691499 - 2³ = 47691491 is a prime.

It is not a weakly prime, because it can be changed into another prime (47691491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23845749 + 23845750.

It is an arithmetic number, because the mean of its divisors is an integer number (23845750).

Almost surely, 2^47691499 is an apocalyptic number.

47691499 is a deficient number, since it is larger than the sum of its proper divisors (1).

47691499 is an equidigital number, since it uses as much as digits as its factorization.

47691499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 49.

The square root of 47691499 is about 6905.9031994374. The cubic root of 47691499 is about 362.6438563402.

The spelling of 47691499 in words is "forty-seven million, six hundred ninety-one thousand, four hundred ninety-nine".