1393901 has 8 divisors (see below), whose sum is σ = 1449624. Its totient is φ = 1339200.

The previous prime is 1393891. The next prime is 1393913. The reversal of 1393901 is 1093931.

It can be written as a sum of positive squares in 4 ways, for example, as 902500 + 491401 = 950^2 + 701^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1393901 - 2⁶ = 1393837 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 (1393921) 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 7 ways as a sum of consecutive naturals, for example, 3551 + ... + 3923.

It is an arithmetic number, because the mean of its divisors is an integer number (181203).

2^1393901 is an apocalyptic number.

It is an amenable number.

1393901 is a deficient number, since it is larger than the sum of its proper divisors (55723).

1393901 is a wasteful number, since it uses less digits than its factorization.

1393901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511.

The product of its (nonzero) digits is 729, while the sum is 26.

The square root of 1393901 is about 1180.6358456357. The cubic root of 1393901 is about 111.7062081198.

The spelling of 1393901 in words is "one million, three hundred ninety-three thousand, nine hundred one".