436981 has 8 divisors (see below), whose sum is σ = 466400. Its totient is φ = 408240.

The previous prime is 436979. The next prime is 436993. The reversal of 436981 is 189634.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 436981 - 2¹ = 436979 is a prime.

It is a super-2 number, since 2×436981² = 381904788722, which contains 22 as substring.

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

It is a Duffinian number.

436981 is a modest number, since divided by 981 gives 436 as remainder.

It is a plaindrome in base 7.

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 436981.

It is not an unprimeable number, because it can be changed into a prime (436081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1966 + ... + 2176.

It is an arithmetic number, because the mean of its divisors is an integer number (58300).

2⁴³⁶⁹⁸¹ is an apocalyptic number.

It is an amenable number.

436981 is a deficient number, since it is larger than the sum of its proper divisors (29419).

436981 is a wasteful number, since it uses less digits than its factorization.

436981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339.

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

The square root of 436981 is about 661.0453842211. The cubic root of 436981 is about 75.8846935678.

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

The spelling of 436981 in words is "four hundred thirty-six thousand, nine hundred eighty-one".