1612399 has 4 divisors (see below), whose sum is σ = 1707264. Its totient is φ = 1517536.

The previous prime is 1612393. The next prime is 1612427. The reversal of 1612399 is 9932161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9932161 = 73 ⋅136057.

It is a cyclic number.

It is not a de Polignac number, because 1612399 - 2⁷ = 1612271 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 1612399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1612393) 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, 47407 + ... + 47440.

It is an arithmetic number, because the mean of its divisors is an integer number (426816).

2^1612399 is an apocalyptic number.

1612399 is a deficient number, since it is larger than the sum of its proper divisors (94865).

1612399 is an equidigital number, since it uses as much as digits as its factorization.

1612399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94864.

The product of its digits is 2916, while the sum is 31.

The square root of 1612399 is about 1269.8027405861. The cubic root of 1612399 is about 117.2620565795.

The spelling of 1612399 in words is "one million, six hundred twelve thousand, three hundred ninety-nine".