1409679 has 6 divisors (see below), whose sum is σ = 2036216. Its totient is φ = 939780.

The previous prime is 1409677. The next prime is 1409713. The reversal of 1409679 is 9769041.

It is not a de Polignac number, because 1409679 - 2¹ = 1409677 is a prime.

It is a Duffinian number.

1409679 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1409677) 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, 78307 + ... + 78324.

2^1409679 is an apocalyptic number.

1409679 is a deficient number, since it is larger than the sum of its proper divisors (626537).

1409679 is a wasteful number, since it uses less digits than its factorization.

1409679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156637 (or 156634 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1409679 is about 1187.2990356267. The cubic root of 1409679 is about 112.1261068932.

The spelling of 1409679 in words is "one million, four hundred nine thousand, six hundred seventy-nine".