440129977 has 4 divisors (see below), whose sum is σ = 503005696. Its totient is φ = 377254260.

The previous prime is 440129969. The next prime is 440130011. The reversal of 440129977 is 779921044.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 440129977 - 2³ = 440129969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440121977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31437849 + ... + 31437862.

It is an arithmetic number, because the mean of its divisors is an integer number (125751424).

Almost surely, 2^440129977 is an apocalyptic number.

It is an amenable number.

440129977 is a deficient number, since it is larger than the sum of its proper divisors (62875719).

440129977 is an equidigital number, since it uses as much as digits as its factorization.

440129977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62875718.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 440129977 is about 20979.2749398067. The cubic root of 440129977 is about 760.6653781656.

The spelling of 440129977 in words is "four hundred forty million, one hundred twenty-nine thousand, nine hundred seventy-seven".