98434921 has 16 divisors (see below), whose sum is σ = 107872128. Its totient is φ = 89280000.

The previous prime is 98434909. The next prime is 98434933. The reversal of 98434921 is 12943489.

It is an interprime number because it is at equal distance from previous prime (98434909) and next prime (98434933).

It is a 4-Lehmer number, since φ(98434921) divides (98434921-1)⁴.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98434921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (98435921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316356 + ... + 316666.

It is an arithmetic number, because the mean of its divisors is an integer number (6742008).

Almost surely, 2^98434921 is an apocalyptic number.

It is an amenable number.

98434921 is a deficient number, since it is larger than the sum of its proper divisors (9437207).

98434921 is a wasteful number, since it uses less digits than its factorization.

98434921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672.

The product of its digits is 62208, while the sum is 40.

The square root of 98434921 is about 9921.4374462575. The cubic root of 98434921 is about 461.7246552439.

It can be divided in two parts, 9843 and 4921, that multiplied together give a triangular number (48437403 = T₉₈₄₂).

The spelling of 98434921 in words is "ninety-eight million, four hundred thirty-four thousand, nine hundred twenty-one".