898739690 has 32 divisors (see below), whose sum is σ = 1632862800. Its totient is φ = 356147200.

The previous prime is 898739641. The next prime is 898739741. The reversal of 898739690 is 96937898.

It can be written as a sum of positive squares in 8 ways, for example, as 454499761 + 444239929 = 21319^2 + 21077^2 .

It is a super-2 number, since 2×898739690² = 1615466060762592200, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 954620 + ... + 955560.

Almost surely, 2^898739690 is an apocalyptic number.

898739690 is a deficient number, since it is larger than the sum of its proper divisors (734123110).

898739690 is a wasteful number, since it uses less digits than its factorization.

898739690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The square root of 898739690 is about 29978.9874745629. The cubic root of 898739690 is about 965.0385015109.

The spelling of 898739690 in words is "eight hundred ninety-eight million, seven hundred thirty-nine thousand, six hundred ninety".