98656925409 has 27 divisors (see below), whose sum is σ = 165781563987. Its totient is φ = 56371616784.

The previous prime is 98656925387. The next prime is 98656925413. The reversal of 98656925409 is 90452965689.

The square root of 98656925409 is 314097.

It is a perfect power (a square), and thus also a powerful number.

98656925409 is a `hidden beast` number, since 9 + 8 + 6 + 569 + 25 + 40 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 24905574225 + 73751351184 = 157815^2 + 271572^2 .

It is not a de Polignac number, because 98656925409 - 2⁵ = 98656925377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (98656921409) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6588559 + ... + 6603515.

Almost surely, 2^98656925409 is an apocalyptic number.

98656925409 is the 314097-th square number.

98656925409 is the 157049-th centered octagonal number.

It is an amenable number.

98656925409 is a deficient number, since it is larger than the sum of its proper divisors (67124638578).

98656925409 is an frugal number, since it uses more digits than its factorization.

98656925409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29934 (or 14967 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 63.

The spelling of 98656925409 in words is "ninety-eight billion, six hundred fifty-six million, nine hundred twenty-five thousand, four hundred nine".