1154340440 has 64 divisors (see below), whose sum is σ = 2982528000. Its totient is φ = 397664640.

The previous prime is 1154340437. The next prime is 1154340469. The reversal of 1154340440 is 440434511.

It is a happy number.

It is a super-4 number, since 4×1154340440⁴ (a number of 37 digits) contains 4444 as substring.

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, 60680 + ... + 77399.

It is an arithmetic number, because the mean of its divisors is an integer number (46602000).

Almost surely, 2^1154340440 is an apocalyptic number.

1154340440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1154340440 is an abundant number, since it is smaller than the sum of its proper divisors (1828187560).

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

1154340440 is a wasteful number, since it uses less digits than its factorization.

1154340440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138120 (or 138116 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1154340440 is about 33975.5859404956. The cubic root of 1154340440 is about 1049.0059950530.

Adding to 1154340440 its reverse (440434511), we get a palindrome (1594774951).

The spelling of 1154340440 in words is "one billion, one hundred fifty-four million, three hundred forty thousand, four hundred forty".