99220471 has 4 divisors (see below), whose sum is σ = 113394832. Its totient is φ = 85046112.

The previous prime is 99220463. The next prime is 99220519. The reversal of 99220471 is 17402299.

It is a happy number.

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 99220471 - 2³ = 99220463 is a prime.

It is a super-3 number, since 3×99220471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99260471) 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, 7087170 + ... + 7087183.

It is an arithmetic number, because the mean of its divisors is an integer number (28348708).

Almost surely, 2^99220471 is an apocalyptic number.

99220471 is a deficient number, since it is larger than the sum of its proper divisors (14174361).

99220471 is a wasteful number, since it uses less digits than its factorization.

99220471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14174360.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 99220471 is about 9960.9472943089. The cubic root of 99220471 is about 462.9496514251.

The spelling of 99220471 in words is "ninety-nine million, two hundred twenty thousand, four hundred seventy-one".