981436 has 12 divisors (see below), whose sum is σ = 1734040. Its totient is φ = 486000.

The previous prime is 981419. The next prime is 981437. The reversal of 981436 is 634189.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 981398 and 981407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981437) by changing a digit.

981436 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690 + ... + 1561.

2⁹⁸¹⁴³⁶ is an apocalyptic number.

It is an amenable number.

981436 is a deficient number, since it is larger than the sum of its proper divisors (752604).

981436 is a wasteful number, since it uses less digits than its factorization.

981436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364 (or 2362 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 981436 is about 990.6745176898. The cubic root of 981436 is about 99.3773308790.

It can be divided in two parts, 981 and 436, that multiplied together give a square (427716 = 654²).

The spelling of 981436 in words is "nine hundred eighty-one thousand, four hundred thirty-six".