1401769 has 4 divisors (see below), whose sum is σ = 1484244. Its totient is φ = 1319296.

The previous prime is 1401767. The next prime is 1401791. The reversal of 1401769 is 9671041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9671041 = 1321 ⋅7321.

It can be written as a sum of positive squares in 2 ways, for example, as 831744 + 570025 = 912^2 + 755^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401769 - 2¹ = 1401767 is a prime.

It is a super-2 number, since 2×1401769² = 3929912658722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401761) 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 3 ways as a sum of consecutive naturals, for example, 41212 + ... + 41245.

It is an arithmetic number, because the mean of its divisors is an integer number (371061).

2^1401769 is an apocalyptic number.

It is an amenable number.

1401769 is a deficient number, since it is larger than the sum of its proper divisors (82475).

1401769 is an equidigital number, since it uses as much as digits as its factorization.

1401769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82474.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1401769 is about 1183.9632595651. The cubic root of 1401769 is about 111.9159924892.

It can be divided in two parts, 140176 and 9, that added together give a triangular number (140185 = T₅₂₉).

The spelling of 1401769 in words is "one million, four hundred one thousand, seven hundred sixty-nine".