1399061 has 4 divisors (see below), whose sum is σ = 1444224. Its totient is φ = 1353900.

The previous prime is 1399039. The next prime is 1399063. The reversal of 1399061 is 1609931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1609931 = 23 ⋅69997.

It is a cyclic number.

It is not a de Polignac number, because 1399061 - 2⁶ = 1398997 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 (1399063) 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, 22535 + ... + 22596.

It is an arithmetic number, because the mean of its divisors is an integer number (361056).

2^1399061 is an apocalyptic number.

It is an amenable number.

1399061 is a deficient number, since it is larger than the sum of its proper divisors (45163).

1399061 is an equidigital number, since it uses as much as digits as its factorization.

1399061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45162.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 1399061 is about 1182.8190901402. The cubic root of 1399061 is about 111.8438779259.

The spelling of 1399061 in words is "one million, three hundred ninety-nine thousand, sixty-one".