1391801 has 4 divisors (see below), whose sum is σ = 1395072. Its totient is φ = 1388532.

The previous prime is 1391779. The next prime is 1391849. The reversal of 1391801 is 1081931.

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 1391801 - 2¹⁴ = 1375417 is a prime.

It is a super-2 number, since 2×1391801² = 3874220047202, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1391861) 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, 881 + ... + 1886.

It is an arithmetic number, because the mean of its divisors is an integer number (348768).

2^1391801 is an apocalyptic number.

It is an amenable number.

1391801 is a deficient number, since it is larger than the sum of its proper divisors (3271).

1391801 is an equidigital number, since it uses as much as digits as its factorization.

1391801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3270.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1391801 is about 1179.7461591376. The cubic root of 1391801 is about 111.6500824360.

The spelling of 1391801 in words is "one million, three hundred ninety-one thousand, eight hundred one".