1401397 has 4 divisors (see below), whose sum is σ = 1405440. Its totient is φ = 1397356.

The previous prime is 1401377. The next prime is 1401401. The reversal of 1401397 is 7931041.

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 1401397 - 2¹⁹ = 877109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401317) 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, 1447 + ... + 2212.

It is an arithmetic number, because the mean of its divisors is an integer number (351360).

2^1401397 is an apocalyptic number.

It is an amenable number.

1401397 is a deficient number, since it is larger than the sum of its proper divisors (4043).

1401397 is an equidigital number, since it uses as much as digits as its factorization.

1401397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4042.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 1401397 is about 1183.8061496715. The cubic root of 1401397 is about 111.9060915634.

The spelling of 1401397 in words is "one million, four hundred one thousand, three hundred ninety-seven".