1699469389 has 2 divisors, whose sum is σ = 1699469390. Its totient is φ = 1699469388.

The previous prime is 1699469363. The next prime is 1699469407. The reversal of 1699469389 is 9839649961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1610015625 + 89453764 = 40125^2 + 9458^2 .

It is an emirp because it is prime and its reverse (9839649961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1699469389 - 2¹⁵ = 1699436621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1699469389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1699469309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 849734694 + 849734695.

It is an arithmetic number, because the mean of its divisors is an integer number (849734695).

Almost surely, 2^1699469389 is an apocalyptic number.

It is an amenable number.

1699469389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1699469389 is an equidigital number, since it uses as much as digits as its factorization.

1699469389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22674816, while the sum is 64.

The square root of 1699469389 is about 41224.6211504727. The cubic root of 1699469389 is about 1193.3590073767.

The spelling of 1699469389 in words is "one billion, six hundred ninety-nine million, four hundred sixty-nine thousand, three hundred eighty-nine".