1371409 has 16 divisors (see below), whose sum is σ = 1580544. Its totient is φ = 1180800.

The previous prime is 1371397. The next prime is 1371431. The reversal of 1371409 is 9041731.

It is not a de Polignac number, because 1371409 - 2¹³ = 1363217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1371449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16482 + ... + 16564.

It is an arithmetic number, because the mean of its divisors is an integer number (98784).

2^1371409 is an apocalyptic number.

It is an amenable number.

1371409 is a deficient number, since it is larger than the sum of its proper divisors (209135).

1371409 is a wasteful number, since it uses less digits than its factorization.

1371409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 1371409 is about 1171.0717313641. The cubic root of 1371409 is about 111.1021163459.

The spelling of 1371409 in words is "one million, three hundred seventy-one thousand, four hundred nine".