1340477943 has 8 divisors (see below), whose sum is σ = 2042633088. Its totient is φ = 765987384.

The previous prime is 1340477891. The next prime is 1340477953. The reversal of 1340477943 is 3497740431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1340477943 - 2¹² = 1340473847 is a prime.

It is a super-2 number, since 2×1340477943² = 3593762231339022498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1340477895 and 1340477904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340477953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31916121 + ... + 31916162.

It is an arithmetic number, because the mean of its divisors is an integer number (255329136).

Almost surely, 2^1340477943 is an apocalyptic number.

1340477943 is a deficient number, since it is larger than the sum of its proper divisors (702155145).

1340477943 is an equidigital number, since it uses as much as digits as its factorization.

1340477943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63832293.

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 1340477943 is about 36612.5380573377. The cubic root of 1340477943 is about 1102.6048304020.

The spelling of 1340477943 in words is "one billion, three hundred forty million, four hundred seventy-seven thousand, nine hundred forty-three".