989525951 has 2 divisors, whose sum is σ = 989525952. Its totient is φ = 989525950.

The previous prime is 989525899. The next prime is 989525981. The reversal of 989525951 is 159525989.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 989525951 - 2¹⁰ = 989524927 is a prime.

It is a super-3 number, since 3×989525951³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 989525893 and 989525902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989525981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494762975 + 494762976.

It is an arithmetic number, because the mean of its divisors is an integer number (494762976).

Almost surely, 2^989525951 is an apocalyptic number.

989525951 is a deficient number, since it is larger than the sum of its proper divisors (1).

989525951 is an equidigital number, since it uses as much as digits as its factorization.

989525951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1458000, while the sum is 53.

The square root of 989525951 is about 31456.7314099860. The cubic root of 989525951 is about 996.4963893819.

The spelling of 989525951 in words is "nine hundred eighty-nine million, five hundred twenty-five thousand, nine hundred fifty-one".