1889402 has 4 divisors (see below), whose sum is σ = 2834106. Its totient is φ = 944700.

The previous prime is 1889401. The next prime is 1889411. The reversal of 1889402 is 2049881.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2049881 = 53 ⋅38677.

It can be written as a sum of positive squares in only one way, i.e., 1343281 + 546121 = 1159^2 + 739^2 .

It is not an unprimeable number, because it can be changed into a prime (1889401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472349 + ... + 472352.

2^1889402 is an apocalyptic number.

1889402 is a deficient number, since it is larger than the sum of its proper divisors (944704).

1889402 is an equidigital number, since it uses as much as digits as its factorization.

1889402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944703.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 1889402 is about 1374.5552007831. Note that the first 3 decimals coincide. The cubic root of 1889402 is about 123.6255177848.

The spelling of 1889402 in words is "one million, eight hundred eighty-nine thousand, four hundred two".