1393953 has 16 divisors (see below), whose sum is σ = 2068416. Its totient is φ = 827840.

The previous prime is 1393939. The next prime is 1393957. The reversal of 1393953 is 3593931.

It is a cyclic number.

It is not a de Polignac number, because 1393953 - 2⁴ = 1393937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1393957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1351 + ... + 2147.

It is an arithmetic number, because the mean of its divisors is an integer number (129276).

2^1393953 is an apocalyptic number.

It is an amenable number.

1393953 is a deficient number, since it is larger than the sum of its proper divisors (674463).

1393953 is a wasteful number, since it uses less digits than its factorization.

1393953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864.

The product of its digits is 10935, while the sum is 33.

The square root of 1393953 is about 1180.6578674620. The cubic root of 1393953 is about 111.7075971832.

It can be divided in two parts, 1393 and 953, that added together give a triangular number (2346 = T₆₈).

The spelling of 1393953 in words is "one million, three hundred ninety-three thousand, nine hundred fifty-three".