149383440 has 100 divisors (see below), whose sum is σ = 518853324. Its totient is φ = 39833856.

The previous prime is 149383433. The next prime is 149383441. The reversal of 149383440 is 44383941.

It can be written as a sum of positive squares in 2 ways, for example, as 84934656 + 64448784 = 9216^2 + 8028^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 149383395 and 149383404.

It is not an unprimeable number, because it can be changed into a prime (149383441) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5047 + ... + 18006.

Almost surely, 2^149383440 is an apocalyptic number.

149383440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149383440 is an abundant number, since it is smaller than the sum of its proper divisors (369469884).

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

149383440 is a wasteful number, since it uses less digits than its factorization.

149383440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23078 (or 23063 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 149383440 is about 12222.2518383480. The cubic root of 149383440 is about 530.6002928975.

The spelling of 149383440 in words is "one hundred forty-nine million, three hundred eighty-three thousand, four hundred forty".