214404981 has 16 divisors (see below), whose sum is σ = 332878464. Its totient is φ = 120204864.

The previous prime is 214404979. The next prime is 214404989. The reversal of 214404981 is 189404412.

It is not a de Polignac number, because 214404981 - 2¹ = 214404979 is a prime.

It is a super-2 number, since 2×214404981² = 91938991755220722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214404989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95206 + ... + 97431.

It is an arithmetic number, because the mean of its divisors is an integer number (20804904).

Almost surely, 2^214404981 is an apocalyptic number.

214404981 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

214404981 is a deficient number, since it is larger than the sum of its proper divisors (118473483).

214404981 is a wasteful number, since it uses less digits than its factorization.

214404981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192700.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 214404981 is about 14642.5742613790. The cubic root of 214404981 is about 598.5194803296.

The spelling of 214404981 in words is "two hundred fourteen million, four hundred four thousand, nine hundred eighty-one".