149686398 has 24 divisors (see below), whose sum is σ = 327473328. Its totient is φ = 49410432.

The previous prime is 149686393. The next prime is 149686403. The reversal of 149686398 is 893686941.

149686398 is a `hidden beast` number, since 1 + 496 + 8 + 63 + 98 = 666.

149686398 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (149686393) and next prime (149686403).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149686393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38515 + ... + 42222.

It is an arithmetic number, because the mean of its divisors is an integer number (13644722).

Almost surely, 2^149686398 is an apocalyptic number.

149686398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

149686398 is an abundant number, since it is smaller than the sum of its proper divisors (177786930).

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

149686398 is a wasteful number, since it uses less digits than its factorization.

149686398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80848 (or 80845 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 149686398 is about 12234.6392672608. The cubic root of 149686398 is about 530.9587464094.

The spelling of 149686398 in words is "one hundred forty-nine million, six hundred eighty-six thousand, three hundred ninety-eight".