98172929 has 4 divisors (see below), whose sum is σ = 98339076. Its totient is φ = 98006784.

The previous prime is 98172887. The next prime is 98172961. The reversal of 98172929 is 92927189.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92927189 = 1163 ⋅79903.

It can be written as a sum of positive squares in 2 ways, for example, as 35129329 + 63043600 = 5927^2 + 7940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98172929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (98172029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82184 + ... + 83369.

It is an arithmetic number, because the mean of its divisors is an integer number (24584769).

It is a Proth number, since it is equal to 749 ⋅ 2¹⁷ + 1 and 749 < 2¹⁷.

Almost surely, 2^98172929 is an apocalyptic number.

It is an amenable number.

98172929 is a deficient number, since it is larger than the sum of its proper divisors (166147).

98172929 is a wasteful number, since it uses less digits than its factorization.

98172929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166146.

The product of its digits is 163296, while the sum is 47.

The square root of 98172929 is about 9908.2253204093. The cubic root of 98172929 is about 461.3146528938.

The spelling of 98172929 in words is "ninety-eight million, one hundred seventy-two thousand, nine hundred twenty-nine".