98981457 has 4 divisors (see below), whose sum is σ = 131975280. Its totient is φ = 65987636.

The previous prime is 98981453. The next prime is 98981461. The reversal of 98981457 is 75418989.

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: 75418989 = 3 ⋅25139663.

It is an interprime number because it is at equal distance from previous prime (98981453) and next prime (98981461).

It is a cyclic number.

It is not a de Polignac number, because 98981457 - 2² = 98981453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (98981453) 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, 16496907 + ... + 16496912.

It is an arithmetic number, because the mean of its divisors is an integer number (32993820).

Almost surely, 2^98981457 is an apocalyptic number.

It is an amenable number.

98981457 is a deficient number, since it is larger than the sum of its proper divisors (32993823).

98981457 is a wasteful number, since it uses less digits than its factorization.

98981457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32993822.

The product of its digits is 725760, while the sum is 51.

The square root of 98981457 is about 9948.9425066185. The cubic root of 98981457 is about 462.5776165817.

The spelling of 98981457 in words is "ninety-eight million, nine hundred eighty-one thousand, four hundred fifty-seven".