890868461 has 12 divisors (see below), whose sum is σ = 1053308700. Its totient is φ = 751080960.

The previous prime is 890868457. The next prime is 890868463. The reversal of 890868461 is 164868098.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 473932900 + 416935561 = 21770^2 + 20419^2 .

It is not a de Polignac number, because 890868461 - 2² = 890868457 is a prime.

It is a super-2 number, since 2×890868461² = 1587293229609017042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890868463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146036 + ... + 152013.

It is an arithmetic number, because the mean of its divisors is an integer number (87775725).

Almost surely, 2^890868461 is an apocalyptic number.

It is an amenable number.

890868461 is a deficient number, since it is larger than the sum of its proper divisors (162440239).

890868461 is a wasteful number, since it uses less digits than its factorization.

890868461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298124 (or 298117 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 50.

The square root of 890868461 is about 29847.4196707186. The cubic root of 890868461 is about 962.2129435978.

The spelling of 890868461 in words is "eight hundred ninety million, eight hundred sixty-eight thousand, four hundred sixty-one".