98951391 has 24 divisors (see below), whose sum is σ = 178199424. Its totient is φ = 51402960.

The previous prime is 98951389. The next prime is 98951423. The reversal of 98951391 is 19315989.

It is not a de Polignac number, because 98951391 - 2¹ = 98951389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98951311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70701 + ... + 72086.

It is an arithmetic number, because the mean of its divisors is an integer number (7424976).

Almost surely, 2^98951391 is an apocalyptic number.

98951391 is a deficient number, since it is larger than the sum of its proper divisors (79248033).

98951391 is a wasteful number, since it uses less digits than its factorization.

98951391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142811 (or 142808 counting only the distinct ones).

The product of its digits is 87480, while the sum is 45.

The square root of 98951391 is about 9947.4313769938. The cubic root of 98951391 is about 462.5307752592.

The spelling of 98951391 in words is "ninety-eight million, nine hundred fifty-one thousand, three hundred ninety-one".