1749949 has 2 divisors, whose sum is σ = 1749950. Its totient is φ = 1749948.

The previous prime is 1749941. The next prime is 1749959. The reversal of 1749949 is 9499471.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1664100 + 85849 = 1290^2 + 293^2 .

It is an emirp because it is prime and its reverse (9499471) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1749949 - 2³ = 1749941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1749941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 874974 + 874975.

It is an arithmetic number, because the mean of its divisors is an integer number (874975).

2^1749949 is an apocalyptic number.

It is an amenable number.

1749949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1749949 is an equidigital number, since it uses as much as digits as its factorization.

1749949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 43.

The square root of 1749949 is about 1322.8563792037. The cubic root of 1749949 is about 120.5059425569.

The spelling of 1749949 in words is "one million, seven hundred forty-nine thousand, nine hundred forty-nine".