440202981 has 16 divisors (see below), whose sum is σ = 622353024. Its totient is φ = 275810304.

The previous prime is 440202979. The next prime is 440202991. The reversal of 440202981 is 189202044.

It is not a de Polignac number, because 440202981 - 2¹ = 440202979 is a prime.

It is a super-2 number, since 2×440202981² = 387557328962572722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440202991) 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, 32085 + ... + 43701.

It is an arithmetic number, because the mean of its divisors is an integer number (38897064).

Almost surely, 2^440202981 is an apocalyptic number.

It is an amenable number.

440202981 is a deficient number, since it is larger than the sum of its proper divisors (182150043).

440202981 is a wasteful number, since it uses less digits than its factorization.

440202981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12380.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 440202981 is about 20981.0147752677. The cubic root of 440202981 is about 760.7074328223.

The spelling of 440202981 in words is "four hundred forty million, two hundred two thousand, nine hundred eighty-one".