953981 has 6 divisors (see below), whose sum is σ = 1109790. Its totient is φ = 817656.

The previous prime is 953977. The next prime is 953983. The reversal of 953981 is 189359.

It can be written as a sum of positive squares in only one way, i.e., 765625 + 188356 = 875^2 + 434^2 .

It is not a de Polignac number, because 953981 - 2² = 953977 is a prime.

It is a super-2 number, since 2×953981² = 1820159496722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 953981.

It is not an unprimeable number, because it can be changed into a prime (953983) 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 5 ways as a sum of consecutive naturals, for example, 9686 + ... + 9783.

It is an arithmetic number, because the mean of its divisors is an integer number (184965).

2⁹⁵³⁹⁸¹ is an apocalyptic number.

It is an amenable number.

953981 is a deficient number, since it is larger than the sum of its proper divisors (155809).

953981 is a wasteful number, since it uses less digits than its factorization.

953981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19483 (or 19476 counting only the distinct ones).

The product of its digits is 9720, while the sum is 35.

The square root of 953981 is about 976.7195093782. The cubic root of 953981 is about 98.4418821094.

The spelling of 953981 in words is "nine hundred fifty-three thousand, nine hundred eighty-one".