98777609 has 4 divisors (see below), whose sum is σ = 112888704. Its totient is φ = 84666516.

The previous prime is 98777587. The next prime is 98777621. The reversal of 98777609 is 90677789.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90677789 = 643 ⋅141023.

It is a cyclic number.

It is not a de Polignac number, because 98777609 - 2¹⁶ = 98712073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98777639) 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 3 ways as a sum of consecutive naturals, for example, 7055537 + ... + 7055550.

It is an arithmetic number, because the mean of its divisors is an integer number (28222176).

Almost surely, 2^98777609 is an apocalyptic number.

It is an amenable number.

98777609 is a deficient number, since it is larger than the sum of its proper divisors (14111095).

98777609 is a wasteful number, since it uses less digits than its factorization.

98777609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14111094.

The product of its (nonzero) digits is 1333584, while the sum is 53.

The square root of 98777609 is about 9938.6925196426. The cubic root of 98777609 is about 462.2598455179.

The spelling of 98777609 in words is "ninety-eight million, seven hundred seventy-seven thousand, six hundred nine".