149908990 has 32 divisors (see below), whose sum is σ = 336420864. Its totient is φ = 46724640.

The previous prime is 149908973. The next prime is 149908999. The reversal of 149908990 is 99809941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149908999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96574 + ... + 98113.

It is an arithmetic number, because the mean of its divisors is an integer number (10513152).

Almost surely, 2^149908990 is an apocalyptic number.

149908990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149908990 is an abundant number, since it is smaller than the sum of its proper divisors (186511874).

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

149908990 is a wasteful number, since it uses less digits than its factorization.

149908990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194712.

The product of its (nonzero) digits is 209952, while the sum is 49.

The square root of 149908990 is about 12243.7326824788. The cubic root of 149908990 is about 531.2218044551.

The spelling of 149908990 in words is "one hundred forty-nine million, nine hundred eight thousand, nine hundred ninety".