149387440 has 20 divisors (see below), whose sum is σ = 347325984. Its totient is φ = 59754944.

The previous prime is 149387429. The next prime is 149387453. The reversal of 149387440 is 44783941.

149387440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 149387393 and 149387402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 933592 + ... + 933751.

Almost surely, 2^149387440 is an apocalyptic number.

149387440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149387440 is an abundant number, since it is smaller than the sum of its proper divisors (197938544).

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

149387440 is a wasteful number, since it uses less digits than its factorization.

149387440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867356 (or 1867350 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 149387440 is about 12222.4154732197. The cubic root of 149387440 is about 530.6050287687.

The spelling of 149387440 in words is "one hundred forty-nine million, three hundred eighty-seven thousand, four hundred forty".