971919 has 30 divisors (see below), whose sum is σ = 1594296. Its totient is φ = 589680.

The previous prime is 971917. The next prime is 971921. The reversal of 971919 is 919179.

It is an interprime number because it is at equal distance from previous prime (971917) and next prime (971921).

It is not a de Polignac number, because 971919 - 2¹ = 971917 is a prime.

It is a super-2 number, since 2×971919² = 1889253085122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971917) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 13654 + ... + 13724.

2⁹⁷¹⁹¹⁹ is an apocalyptic number.

971919 is a deficient number, since it is larger than the sum of its proper divisors (622377).

971919 is a wasteful number, since it uses less digits than its factorization.

971919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 87 counting only the distinct ones).

The product of its digits is 5103, while the sum is 36.

The square root of 971919 is about 985.8595234616. The cubic root of 971919 is about 99.0550657844.

It can be divided in two parts, 97 and 1919, that added together give a triangular number (2016 = T₆₃).

The spelling of 971919 in words is "nine hundred seventy-one thousand, nine hundred nineteen".