149071998 has 16 divisors (see below), whose sum is σ = 298550016. Its totient is φ = 49623000.

The previous prime is 149071991. The next prime is 149072017. The reversal of 149071998 is 899170941.

149071998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149071991) 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, 12036 + ... + 21047.

It is an arithmetic number, because the mean of its divisors is an integer number (18659376).

Almost surely, 2^149071998 is an apocalyptic number.

149071998 is an abundant number, since it is smaller than the sum of its proper divisors (149478018).

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

149071998 is a wasteful number, since it uses less digits than its factorization.

149071998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33839.

The product of its (nonzero) digits is 163296, while the sum is 48.

The square root of 149071998 is about 12209.5044125468. The cubic root of 149071998 is about 530.2312957473.

The spelling of 149071998 in words is "one hundred forty-nine million, seventy-one thousand, nine hundred ninety-eight".