1140400353 has 4 divisors (see below), whose sum is σ = 1520533808. Its totient is φ = 760266900.

The previous prime is 1140400337. The next prime is 1140400357. The reversal of 1140400353 is 3530040411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1140400353 - 2⁴ = 1140400337 is a prime.

It is a super-3 number, since 3×1140400353³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1140400357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190066723 + ... + 190066728.

It is an arithmetic number, because the mean of its divisors is an integer number (380133452).

Almost surely, 2^1140400353 is an apocalyptic number.

It is an amenable number.

1140400353 is a deficient number, since it is larger than the sum of its proper divisors (380133455).

1140400353 is an equidigital number, since it uses as much as digits as its factorization.

1140400353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380133454.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1140400353 is about 33769.8142280943. The cubic root of 1140400353 is about 1044.7662009103.

Adding to 1140400353 its reverse (3530040411), we get a palindrome (4670440764).

The spelling of 1140400353 in words is "one billion, one hundred forty million, four hundred thousand, three hundred fifty-three".