1398933841 has 4 divisors (see below), whose sum is σ = 1400357952. Its totient is φ = 1397509732.

The previous prime is 1398933827. The next prime is 1398933863. The reversal of 1398933841 is 1483398931.

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 1398933841 - 2⁷ = 1398933713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1398936841) 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, 710581 + ... + 712546.

It is an arithmetic number, because the mean of its divisors is an integer number (350089488).

Almost surely, 2^1398933841 is an apocalyptic number.

It is an amenable number.

1398933841 is a deficient number, since it is larger than the sum of its proper divisors (1424111).

1398933841 is an equidigital number, since it uses as much as digits as its factorization.

1398933841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424110.

The product of its digits is 559872, while the sum is 49.

The square root of 1398933841 is about 37402.3240053342. The cubic root of 1398933841 is about 1118.4048937062.

The spelling of 1398933841 in words is "one billion, three hundred ninety-eight million, nine hundred thirty-three thousand, eight hundred forty-one".