149090400 has 108 divisors (see below), whose sum is σ = 525755412. Its totient is φ = 39755520.

The previous prime is 149090399. The next prime is 149090407. The reversal of 149090400 is 4090941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149090407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3154 + ... + 17553.

Almost surely, 2^149090400 is an apocalyptic number.

149090400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149090400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262877706).

149090400 is an abundant number, since it is smaller than the sum of its proper divisors (376665012).

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

149090400 is a wasteful number, since it uses less digits than its factorization.

149090400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20733 (or 20717 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 149090400 is about 12210.2579825326. The cubic root of 149090400 is about 530.2531127551.

The spelling of 149090400 in words is "one hundred forty-nine million, ninety thousand, four hundred".