1399847941 has 4 divisors (see below), whose sum is σ = 1408230432. Its totient is φ = 1391465452.

The previous prime is 1399847921. The next prime is 1399847957. The reversal of 1399847941 is 1497489931.

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.

It is a cyclic number.

It is not a de Polignac number, because 1399847941 - 2⁵ = 1399847909 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 (1399847921) 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, 4190995 + ... + 4191328.

It is an arithmetic number, because the mean of its divisors is an integer number (352057608).

Almost surely, 2^1399847941 is an apocalyptic number.

It is an amenable number.

1399847941 is a deficient number, since it is larger than the sum of its proper divisors (8382491).

1399847941 is an equidigital number, since it uses as much as digits as its factorization.

1399847941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8382490.

The product of its digits is 1959552, while the sum is 55.

The square root of 1399847941 is about 37414.5418387022. The cubic root of 1399847941 is about 1118.6484390145.

The spelling of 1399847941 in words is "one billion, three hundred ninety-nine million, eight hundred forty-seven thousand, nine hundred forty-one".