8436981 has 16 divisors (see below), whose sum is σ = 13613184. Its totient is φ = 4537344.

The previous prime is 8436979. The next prime is 8436983. The reversal of 8436981 is 1896348.

8436981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8436979) and next prime (8436983).

It is not a de Polignac number, because 8436981 - 2¹ = 8436979 is a prime.

It is a super-2 number, since 2×8436981² = 142365296788722, which contains 22 as substring.

8436981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8436983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11460 + ... + 12173.

It is an arithmetic number, because the mean of its divisors is an integer number (850824).

Almost surely, 2^8436981 is an apocalyptic number.

It is an amenable number.

8436981 is a deficient number, since it is larger than the sum of its proper divisors (5176203).

8436981 is a wasteful number, since it uses less digits than its factorization.

8436981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23660.

The product of its digits is 41472, while the sum is 39.

The square root of 8436981 is about 2904.6481714659. The cubic root of 8436981 is about 203.5771469879.

The spelling of 8436981 in words is "eight million, four hundred thirty-six thousand, nine hundred eighty-one".