1340774471 has 4 divisors (see below), whose sum is σ = 1341306744. Its totient is φ = 1340242200.

The previous prime is 1340774467. The next prime is 1340774473. The reversal of 1340774471 is 1744770431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1340774471 - 2² = 1340774467 is a prime.

It is a super-3 number, since 3×1340774471³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340774473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262340 + ... + 267401.

It is an arithmetic number, because the mean of its divisors is an integer number (335326686).

Almost surely, 2^1340774471 is an apocalyptic number.

1340774471 is a deficient number, since it is larger than the sum of its proper divisors (532273).

1340774471 is an equidigital number, since it uses as much as digits as its factorization.

1340774471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532272.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 1340774471 is about 36616.5873751228. The cubic root of 1340774471 is about 1102.6861270522.

It can be divided in two parts, 13407 and 74471, that added together give a palindrome (87878).

The spelling of 1340774471 in words is "one billion, three hundred forty million, seven hundred seventy-four thousand, four hundred seventy-one".