97722789 has 16 divisors (see below), whose sum is σ = 134948352. Its totient is φ = 62859888.

The previous prime is 97722787. The next prime is 97722799. The reversal of 97722789 is 98722779.

It is not a de Polignac number, because 97722789 - 2¹ = 97722787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97722787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6144 + ... + 15270.

It is an arithmetic number, because the mean of its divisors is an integer number (8434272).

Almost surely, 2^97722789 is an apocalyptic number.

It is an amenable number.

97722789 is a deficient number, since it is larger than the sum of its proper divisors (37225563).

97722789 is a wasteful number, since it uses less digits than its factorization.

97722789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9256.

The product of its digits is 889056, while the sum is 51.

The square root of 97722789 is about 9885.4837514408. The cubic root of 97722789 is about 460.6085031407.

It can be divided in two parts, 9772 and 2789, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 97722789 in words is "ninety-seven million, seven hundred twenty-two thousand, seven hundred eighty-nine".