1952209 has 6 divisors (see below), whose sum is σ = 2270994. Its totient is φ = 1673280.

The previous prime is 1952207. The next prime is 1952219. The reversal of 1952209 is 9022591.

It can be written as a sum of positive squares in only one way, i.e., 1500625 + 451584 = 1225^2 + 672^2 .

It is not a de Polignac number, because 1952209 - 2¹ = 1952207 is a prime.

It is a super-2 number, since 2×1952209² = 7622239959362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1952201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19872 + ... + 19969.

It is an arithmetic number, because the mean of its divisors is an integer number (378499).

2^1952209 is an apocalyptic number.

It is an amenable number.

1952209 is a deficient number, since it is larger than the sum of its proper divisors (318785).

1952209 is an equidigital number, since it uses as much as digits as its factorization.

1952209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39855 (or 39848 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 1952209 is about 1397.2147293813. The cubic root of 1952209 is about 124.9804556110.

The spelling of 1952209 in words is "one million, nine hundred fifty-two thousand, two hundred nine".