1398240456 has 32 divisors (see below), whose sum is σ = 3510617760. Its totient is φ = 464077952.

The previous prime is 1398240451. The next prime is 1398240479. The reversal of 1398240456 is 6540428931.

It is not an unprimeable number, because it can be changed into a prime (1398240451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119430 + ... + 130613.

It is an arithmetic number, because the mean of its divisors is an integer number (109706805).

Almost surely, 2^1398240456 is an apocalyptic number.

It is an amenable number.

1398240456 is an abundant number, since it is smaller than the sum of its proper divisors (2112377304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1398240456 is a wasteful number, since it uses less digits than its factorization.

1398240456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250285 (or 250281 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 1398240456 is about 37393.0535795086. The cubic root of 1398240456 is about 1118.2200831232.

The spelling of 1398240456 in words is "one billion, three hundred ninety-eight million, two hundred forty thousand, four hundred fifty-six".