1402009 has 8 divisors (see below), whose sum is σ = 1632960. Its totient is φ = 1178736.

The previous prime is 1402003. The next prime is 1402019. The reversal of 1402009 is 9002041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1402009 - 2⁵ = 1401977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1401983 and 1402001.

It is not an unprimeable number, because it can be changed into a prime (1402003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1519 + ... + 2260.

It is an arithmetic number, because the mean of its divisors is an integer number (204120).

2^1402009 is an apocalyptic number.

It is an amenable number.

1402009 is a deficient number, since it is larger than the sum of its proper divisors (230951).

1402009 is an equidigital number, since it uses as much as digits as its factorization.

1402009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3839.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1402009 is about 1184.0646097236. The cubic root of 1402009 is about 111.9223792537.

The spelling of 1402009 in words is "one million, four hundred two thousand, nine".