1373091 has 4 divisors (see below), whose sum is σ = 1830792. Its totient is φ = 915392.

The previous prime is 1373087. The next prime is 1373129. The reversal of 1373091 is 1903731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1903731 = 3 ⋅634577.

It is a cyclic number.

It is not a de Polignac number, because 1373091 - 2² = 1373087 is a prime.

It is a D-number.

1373091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1373041) 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, 228846 + ... + 228851.

It is an arithmetic number, because the mean of its divisors is an integer number (457698).

2^1373091 is an apocalyptic number.

1373091 is a deficient number, since it is larger than the sum of its proper divisors (457701).

1373091 is an equidigital number, since it uses as much as digits as its factorization.

1373091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457700.

The product of its (nonzero) digits is 567, while the sum is 24.

The square root of 1373091 is about 1171.7896568924. The cubic root of 1373091 is about 111.1475191429.

The spelling of 1373091 in words is "one million, three hundred seventy-three thousand, ninety-one".