99977773 has 8 divisors (see below), whose sum is σ = 114574592. Its totient is φ = 85459536.

The previous prime is 99977771. The next prime is 99977797. The reversal of 99977773 is 37777999.

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 99977773 - 2¹ = 99977771 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99977771) 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, 16890 + ... + 22027.

It is an arithmetic number, because the mean of its divisors is an integer number (14321824).

Almost surely, 2^99977773 is an apocalyptic number.

It is an amenable number.

99977773 is a deficient number, since it is larger than the sum of its proper divisors (14596819).

99977773 is a wasteful number, since it uses less digits than its factorization.

99977773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39291.

The product of its digits is 5250987, while the sum is 58.

The square root of 99977773 is about 9998.8885882382. Note that the first 3 decimals coincide. The cubic root of 99977773 is about 464.1244912814.

The spelling of 99977773 in words is "ninety-nine million, nine hundred seventy-seven thousand, seven hundred seventy-three".