99977222 has 8 divisors (see below), whose sum is σ = 150864336. Its totient is φ = 49689112.

The previous prime is 99977209. The next prime is 99977233. The reversal of 99977222 is 22277999.

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

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149333 + ... + 150000.

It is an arithmetic number, because the mean of its divisors is an integer number (18858042).

Almost surely, 2^99977222 is an apocalyptic number.

99977222 is a deficient number, since it is larger than the sum of its proper divisors (50887114).

99977222 is a wasteful number, since it uses less digits than its factorization.

99977222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299502.

The product of its digits is 285768, while the sum is 47.

The square root of 99977222 is about 9998.8610351380. The cubic root of 99977222 is about 464.1236386483.

The spelling of 99977222 in words is "ninety-nine million, nine hundred seventy-seven thousand, two hundred twenty-two".