89990501 has 2 divisors, whose sum is σ = 89990502. Its totient is φ = 89990500.

The previous prime is 89990491. The next prime is 89990519. The reversal of 89990501 is 10509998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88548100 + 1442401 = 9410^2 + 1201^2 .

It is a cyclic number.

It is not a de Polignac number, because 89990501 - 2¹⁴ = 89974117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89990561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44995250 + 44995251.

It is an arithmetic number, because the mean of its divisors is an integer number (44995251).

Almost surely, 2^89990501 is an apocalyptic number.

It is an amenable number.

89990501 is a deficient number, since it is larger than the sum of its proper divisors (1).

89990501 is an equidigital number, since it uses as much as digits as its factorization.

89990501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 89990501 is about 9486.3323260362. The cubic root of 89990501 is about 448.1247078552.

The spelling of 89990501 in words is "eighty-nine million, nine hundred ninety thousand, five hundred one".