98779501 has 2 divisors, whose sum is σ = 98779502. Its totient is φ = 98779500.

The previous prime is 98779493. The next prime is 98779553. The reversal of 98779501 is 10597789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94070601 + 4708900 = 9699^2 + 2170^2 .

It is a cyclic number.

It is not a de Polignac number, because 98779501 - 2³ = 98779493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98779561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49389750 + 49389751.

It is an arithmetic number, because the mean of its divisors is an integer number (49389751).

Almost surely, 2^98779501 is an apocalyptic number.

It is an amenable number.

98779501 is a deficient number, since it is larger than the sum of its proper divisors (1).

98779501 is an equidigital number, since it uses as much as digits as its factorization.

98779501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 46.

The square root of 98779501 is about 9938.7877027332. The cubic root of 98779501 is about 462.2627968954.

The spelling of 98779501 in words is "ninety-eight million, seven hundred seventy-nine thousand, five hundred one".