1170440639 has 2 divisors, whose sum is σ = 1170440640. Its totient is φ = 1170440638.

The previous prime is 1170440627. The next prime is 1170440657. The reversal of 1170440639 is 9360440711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1170440639 - 2¹⁶ = 1170375103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1170440599 and 1170440608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1170440039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585220319 + 585220320.

It is an arithmetic number, because the mean of its divisors is an integer number (585220320).

Almost surely, 2^1170440639 is an apocalyptic number.

1170440639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1170440639 is an equidigital number, since it uses as much as digits as its factorization.

1170440639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 1170440639 is about 34211.7032461116. The cubic root of 1170440639 is about 1053.8605095488.

The spelling of 1170440639 in words is "one billion, one hundred seventy million, four hundred forty thousand, six hundred thirty-nine".