1398830445 has 128 divisors (see below), whose sum is σ = 2767564800. Its totient is φ = 667180800.

The previous prime is 1398830443. The next prime is 1398830471. The reversal of 1398830445 is 5440388931.

1398830445 = 12³ + 13³ + ... + 273³.

It is not a de Polignac number, because 1398830445 - 2¹ = 1398830443 is a prime.

It is a super-2 number, since 2×1398830445² = 3913453227717796050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1398830445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398830441) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7728255 + ... + 7728435.

It is an arithmetic number, because the mean of its divisors is an integer number (21621600).

Almost surely, 2^1398830445 is an apocalyptic number.

1398830445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1398830445 is a deficient number, since it is larger than the sum of its proper divisors (1368734355).

1398830445 is a wasteful number, since it uses less digits than its factorization.

1398830445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 1398830445 is about 37400.9417662176. The cubic root of 1398830445 is about 1118.3773390456.

The spelling of 1398830445 in words is "one billion, three hundred ninety-eight million, eight hundred thirty thousand, four hundred forty-five".