1969402 has 4 divisors (see below), whose sum is σ = 2954106. Its totient is φ = 984700.

The previous prime is 1969381. The next prime is 1969403. The reversal of 1969402 is 2049691.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1535121 + 434281 = 1239^2 + 659^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1969403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492349 + ... + 492352.

2^1969402 is an apocalyptic number.

1969402 is a deficient number, since it is larger than the sum of its proper divisors (984704).

1969402 is an equidigital number, since it uses as much as digits as its factorization.

1969402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984703.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1969402 is about 1403.3538399135. The cubic root of 1969402 is about 125.3462824883.

The spelling of 1969402 in words is "one million, nine hundred sixty-nine thousand, four hundred two".