951989 has 4 divisors (see below), whose sum is σ = 954156. Its totient is φ = 949824.

The previous prime is 951967. The next prime is 951997. The reversal of 951989 is 989159.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34225 + 917764 = 185^2 + 958^2 .

It is a cyclic number.

It is not a de Polignac number, because 951989 - 2¹² = 947893 is a prime.

It is a super-2 number, since 2×951989² = 1812566112242, 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 (951959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164 + ... + 1389.

It is an arithmetic number, because the mean of its divisors is an integer number (238539).

2⁹⁵¹⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

951989 is a deficient number, since it is larger than the sum of its proper divisors (2167).

951989 is a wasteful number, since it uses less digits than its factorization.

951989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166.

The product of its digits is 29160, while the sum is 41.

The square root of 951989 is about 975.6992364453. The cubic root of 951989 is about 98.3733157974.

The spelling of 951989 in words is "nine hundred fifty-one thousand, nine hundred eighty-nine".