1398894694 has 4 divisors (see below), whose sum is σ = 2098342044. Its totient is φ = 699447346.

The previous prime is 1398894677. The next prime is 1398894697. The reversal of 1398894694 is 4964988931.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398894697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349723672 + ... + 349723675.

It is an arithmetic number, because the mean of its divisors is an integer number (524585511).

Almost surely, 2^1398894694 is an apocalyptic number.

1398894694 is a deficient number, since it is larger than the sum of its proper divisors (699447350).

1398894694 is an equidigital number, since it uses as much as digits as its factorization.

1398894694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699447349.

The product of its digits is 13436928, while the sum is 61.

The square root of 1398894694 is about 37401.8006785770. The cubic root of 1398894694 is about 1118.3944613318.

The spelling of 1398894694 in words is "one billion, three hundred ninety-eight million, eight hundred ninety-four thousand, six hundred ninety-four".