1401867 has 16 divisors (see below), whose sum is σ = 2105760. Its totient is φ = 933120.

The previous prime is 1401857. The next prime is 1401937. The reversal of 1401867 is 7681041.

It is a happy number.

It is not a de Polignac number, because 1401867 - 2⁷ = 1401739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

1401867 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1401867.

It is not an unprimeable number, because it can be changed into a prime (1401817) 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, 1867 + ... + 2507.

It is an arithmetic number, because the mean of its divisors is an integer number (131610).

2^1401867 is an apocalyptic number.

1401867 is a deficient number, since it is larger than the sum of its proper divisors (703893).

1401867 is an frugal number, since it uses more digits than its factorization.

1401867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 1401867 is about 1184.0046452612. The cubic root of 1401867 is about 111.9186005061.

The spelling of 1401867 in words is "one million, four hundred one thousand, eight hundred sixty-seven".