1398989350 has 24 divisors (see below), whose sum is σ = 2838677688. Its totient is φ = 508723200.

The previous prime is 1398989327. The next prime is 1398989353. The reversal of 1398989350 is 539898931.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a junction number, because it is equal to n+sod(n) for n = 1398989291 and 1398989300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398989353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1271259 + ... + 1272358.

It is an arithmetic number, because the mean of its divisors is an integer number (118278237).

Almost surely, 2^1398989350 is an apocalyptic number.

1398989350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1398989350 is an abundant number, since it is smaller than the sum of its proper divisors (1439688338).

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

1398989350 is a wasteful number, since it uses less digits than its factorization.

1398989350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2543640 (or 2543635 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 55.

The square root of 1398989350 is about 37403.0660507932. The cubic root of 1398989350 is about 1118.4196860941.

The spelling of 1398989350 in words is "one billion, three hundred ninety-eight million, nine hundred eighty-nine thousand, three hundred fifty".