1400999 has 4 divisors (see below), whose sum is σ = 1461936. Its totient is φ = 1340064.

The previous prime is 1400989. The next prime is 1401007. The reversal of 1400999 is 9990041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9990041 = 619 ⋅16139.

It is a cyclic number.

It is not a de Polignac number, because 1400999 - 2¹² = 1396903 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 (1400939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30434 + ... + 30479.

It is an arithmetic number, because the mean of its divisors is an integer number (365484).

2^1400999 is an apocalyptic number.

1400999 is a deficient number, since it is larger than the sum of its proper divisors (60937).

1400999 is an equidigital number, since it uses as much as digits as its factorization.

1400999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60936.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 1400999 is about 1183.6380358877. The cubic root of 1400999 is about 111.8954966971.

The spelling of 1400999 in words is "one million, four hundred thousand, nine hundred ninety-nine".