1699211317444 has 9 divisors (see below), whose sum is σ = 2973624367917. Its totient is φ = 849604355184.

The previous prime is 1699211317421. The next prime is 1699211317451. The reversal of 1699211317444 is 4447131129961.

The square root of 1699211317444 is 1303538.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1378130427844 + 321080889600 = 1173938^2 + 566640^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1699211317391 and 1699211317400.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2281192 + ... + 2932960.

Almost surely, 2^{1699211317444} is an apocalyptic number.

1699211317444 is the 1303538-th square number.

It is an amenable number.

1699211317444 is a deficient number, since it is larger than the sum of its proper divisors (1274413050473).

1699211317444 is an frugal number, since it uses more digits than its factorization.

1699211317444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303542 (or 651771 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The spelling of 1699211317444 in words is "one trillion, six hundred ninety-nine billion, two hundred eleven million, three hundred seventeen thousand, four hundred forty-four".