351409 has 4 divisors (see below), whose sum is σ = 354304. Its totient is φ = 348516.

The previous prime is 351401. The next prime is 351413. The reversal of 351409 is 904153.

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 351409 - 2³ = 351401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 351409.

It is not an unprimeable number, because it can be changed into a prime (351401) 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, 1257 + ... + 1510.

It is an arithmetic number, because the mean of its divisors is an integer number (88576).

2³⁵¹⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

351409 is a deficient number, since it is larger than the sum of its proper divisors (2895).

351409 is a wasteful number, since it uses less digits than its factorization.

351409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2894.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 351409 is about 592.7976045836. The cubic root of 351409 is about 70.5674287397.

It can be divided in two parts, 35 and 1409, that added together give a square (1444 = 38²).

The spelling of 351409 in words is "three hundred fifty-one thousand, four hundred nine".