440189707 has 2 divisors, whose sum is σ = 440189708. Its totient is φ = 440189706.

The previous prime is 440189699. The next prime is 440189713. The reversal of 440189707 is 707981044.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 440189707 - 2³ = 440189699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 440189707.

It is not a weakly prime, because it can be changed into another prime (440189107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220094853 + 220094854.

It is an arithmetic number, because the mean of its divisors is an integer number (220094854).

Almost surely, 2^440189707 is an apocalyptic number.

440189707 is a deficient number, since it is larger than the sum of its proper divisors (1).

440189707 is an equidigital number, since it uses as much as digits as its factorization.

440189707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 440189707 is about 20980.6984392799. The cubic root of 440189707 is about 760.6997865527.

It can be divided in two parts, 440189 and 707, that added together give a square (440896 = 664²).

The spelling of 440189707 in words is "four hundred forty million, one hundred eighty-nine thousand, seven hundred seven".