1969457 has 6 divisors (see below), whose sum is σ = 2291058. Its totient is φ = 1688064.

The previous prime is 1969453. The next prime is 1969459. The reversal of 1969457 is 7549691.

It can be written as a sum of positive squares in only one way, i.e., 1449616 + 519841 = 1204^2 + 721^2 .

It is not a de Polignac number, because 1969457 - 2² = 1969453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1969453) 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, 20048 + ... + 20145.

It is an arithmetic number, because the mean of its divisors is an integer number (381843).

2^1969457 is an apocalyptic number.

It is an amenable number.

1969457 is a deficient number, since it is larger than the sum of its proper divisors (321601).

1969457 is an equidigital number, since it uses as much as digits as its factorization.

1969457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40207 (or 40200 counting only the distinct ones).

The product of its digits is 68040, while the sum is 41.

The square root of 1969457 is about 1403.3734356899. The cubic root of 1969457 is about 125.3474493369.

The spelling of 1969457 in words is "one million, nine hundred sixty-nine thousand, four hundred fifty-seven".