1402889 has 4 divisors (see below), whose sum is σ = 1422720. Its totient is φ = 1383060.

The previous prime is 1402883. The next prime is 1402901. The reversal of 1402889 is 9882041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1402889 - 2⁴ = 1402873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1402883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9809 + ... + 9950.

It is an arithmetic number, because the mean of its divisors is an integer number (355680).

2^1402889 is an apocalyptic number.

It is an amenable number.

1402889 is a deficient number, since it is larger than the sum of its proper divisors (19831).

1402889 is an equidigital number, since it uses as much as digits as its factorization.

1402889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19830.

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

The square root of 1402889 is about 1184.4361527748. The cubic root of 1402889 is about 111.9457911562.

The spelling of 1402889 in words is "one million, four hundred two thousand, eight hundred eighty-nine".