1673399 has 24 divisors (see below), whose sum is σ = 2183328. Its totient is φ = 1270080.

The previous prime is 1673393. The next prime is 1673401. The reversal of 1673399 is 9933761.

It is not a de Polignac number, because 1673399 - 2¹⁶ = 1607863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1673393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23534 + ... + 23604.

It is an arithmetic number, because the mean of its divisors is an integer number (90972).

2^1673399 is an apocalyptic number.

1673399 is a deficient number, since it is larger than the sum of its proper divisors (509929).

1673399 is a wasteful number, since it uses less digits than its factorization.

1673399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 128 counting only the distinct ones).

The product of its digits is 30618, while the sum is 38.

The square root of 1673399 is about 1293.5992424240. The cubic root of 1673399 is about 118.7225369548.

It can be divided in two parts, 167339 and 9, that multiplied together give a palindrome (1506051).

The spelling of 1673399 in words is "one million, six hundred seventy-three thousand, three hundred ninety-nine".