895401990 has 72 divisors (see below), whose sum is σ = 2708147520. Its totient is φ = 204662304.

The previous prime is 895401989. The next prime is 895402007. The reversal of 895401990 is 99104598.

895401990 is a `hidden beast` number, since 8 + 9 + 540 + 19 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 97110 + ... + 105929.

It is an arithmetic number, because the mean of its divisors is an integer number (37613160).

Almost surely, 2^895401990 is an apocalyptic number.

895401990 is an abundant number, since it is smaller than the sum of its proper divisors (1812745530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

895401990 is a wasteful number, since it uses less digits than its factorization.

895401990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203066 (or 203056 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 895401990 is about 29923.2683709517. The cubic root of 895401990 is about 963.8423803809.

The spelling of 895401990 in words is "eight hundred ninety-five million, four hundred one thousand, nine hundred ninety".