149011440 has 80 divisors (see below), whose sum is σ = 464473248. Its totient is φ = 39518208.

The previous prime is 149011381. The next prime is 149011453. The reversal of 149011440 is 44110941.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 149011440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44712 + ... + 47928.

Almost surely, 2^149011440 is an apocalyptic number.

149011440 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 149011440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232236624).

149011440 is an abundant number, since it is smaller than the sum of its proper divisors (315461808).

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

149011440 is a wasteful number, since it uses less digits than its factorization.

149011440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3426 (or 3420 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 149011440 is about 12207.0242073980. The cubic root of 149011440 is about 530.1594868312.

The spelling of 149011440 in words is "one hundred forty-nine million, eleven thousand, four hundred forty".