1398895461 has 16 divisors (see below), whose sum is σ = 2080512000. Its totient is φ = 928963584.

The previous prime is 1398895447. The next prime is 1398895469. The reversal of 1398895461 is 1645988931.

1398895461 is a `hidden beast` number, since 1 + 3 + 98 + 8 + 9 + 546 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1398895461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1398895398 and 1398895407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398895469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93861 + ... + 107738.

It is an arithmetic number, because the mean of its divisors is an integer number (130032000).

Almost surely, 2^1398895461 is an apocalyptic number.

It is an amenable number.

1398895461 is a deficient number, since it is larger than the sum of its proper divisors (681616539).

1398895461 is a wasteful number, since it uses less digits than its factorization.

1398895461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201865 (or 201859 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 1398895461 is about 37401.8109320926. The cubic root of 1398895461 is about 1118.3946657333.

The spelling of 1398895461 in words is "one billion, three hundred ninety-eight million, eight hundred ninety-five thousand, four hundred sixty-one".