1149408240 has 40 divisors (see below), whose sum is σ = 3563166288. Its totient is φ = 306508800.

The previous prime is 1149408229. The next prime is 1149408251. The reversal of 1149408240 is 428049411.

It is an interprime number because it is at equal distance from previous prime (1149408229) and next prime (1149408251).

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1149408240² = 2642278604359795200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2394361 + ... + 2394840.

Almost surely, 2^1149408240 is an apocalyptic number.

1149408240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1149408240 is an abundant number, since it is smaller than the sum of its proper divisors (2413758048).

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

1149408240 is a wasteful number, since it uses less digits than its factorization.

1149408240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4789217 (or 4789211 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 1149408240 is about 33902.9237677225. The cubic root of 1149408240 is about 1047.5098177681.

The spelling of 1149408240 in words is "one billion, one hundred forty-nine million, four hundred eight thousand, two hundred forty".