1401783 has 4 divisors (see below), whose sum is σ = 1869048. Its totient is φ = 934520.

The previous prime is 1401767. The next prime is 1401791. The reversal of 1401783 is 3871041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1401783 - 2⁴ = 1401767 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233628 + ... + 233633.

It is an arithmetic number, because the mean of its divisors is an integer number (467262).

2^1401783 is an apocalyptic number.

1401783 is a deficient number, since it is larger than the sum of its proper divisors (467265).

1401783 is an equidigital number, since it uses as much as digits as its factorization.

1401783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467264.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 1401783 is about 1183.9691718960. The cubic root of 1401783 is about 111.9163650705.

The spelling of 1401783 in words is "one million, four hundred one thousand, seven hundred eighty-three".