900961281 has 36 divisors (see below), whose sum is σ = 1440187840. Its totient is φ = 542322000.

The previous prime is 900961273. The next prime is 900961289. The reversal of 900961281 is 182169009.

It is an interprime number because it is at equal distance from previous prime (900961273) and next prime (900961289).

It is not a de Polignac number, because 900961281 - 2³ = 900961273 is a prime.

It is a super-2 number, since 2×900961281² = 1623462459722321922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (900961289) by changing a digit.

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, 161700 + ... + 167178.

Almost surely, 2^900961281 is an apocalyptic number.

It is an amenable number.

900961281 is a deficient number, since it is larger than the sum of its proper divisors (539226559).

900961281 is a wasteful number, since it uses less digits than its factorization.

900961281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5658 (or 5644 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 900961281 is about 30016.0170742222. The cubic root of 900961281 is about 965.8330054809.

The spelling of 900961281 in words is "nine hundred million, nine hundred sixty-one thousand, two hundred eighty-one".