440691361 has 16 divisors (see below), whose sum is σ = 489198528. Its totient is φ = 393624000.

The previous prime is 440691359. The next prime is 440691367. The reversal of 440691361 is 163196044.

It is not a de Polignac number, because 440691361 - 2¹ = 440691359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440691367) 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, 516211 + ... + 517063.

It is an arithmetic number, because the mean of its divisors is an integer number (30574908).

Almost surely, 2^440691361 is an apocalyptic number.

It is an amenable number.

440691361 is a deficient number, since it is larger than the sum of its proper divisors (48507167).

440691361 is a wasteful number, since it uses less digits than its factorization.

440691361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 440691361 is about 20992.6501661891. The cubic root of 440691361 is about 760.9886492954.

The spelling of 440691361 in words is "four hundred forty million, six hundred ninety-one thousand, three hundred sixty-one".