149971398 has 8 divisors (see below), whose sum is σ = 299942808. Its totient is φ = 49990464.

The previous prime is 149971387. The next prime is 149971411. The reversal of 149971398 is 893179941.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

149971398 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 149971398.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12497611 + ... + 12497622.

It is an arithmetic number, because the mean of its divisors is an integer number (37492851).

Almost surely, 2^149971398 is an apocalyptic number.

149971398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

149971398 is a wasteful number, since it uses less digits than its factorization.

149971398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24995238.

The product of its digits is 489888, while the sum is 51.

The square root of 149971398 is about 12246.2809864873. The cubic root of 149971398 is about 531.2955111552.

The spelling of 149971398 in words is "one hundred forty-nine million, nine hundred seventy-one thousand, three hundred ninety-eight".