340803977 has 2 divisors, whose sum is σ = 340803978. Its totient is φ = 340803976.

The previous prime is 340803959. The next prime is 340803989. The reversal of 340803977 is 779308043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241522681 + 99281296 = 15541^2 + 9964^2 .

It is a cyclic number.

It is not a de Polignac number, because 340803977 - 2¹⁰ = 340802953 is a prime.

It is a super-2 number, since 2×340803977² = 232294701478033058, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (340803937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170401988 + 170401989.

It is an arithmetic number, because the mean of its divisors is an integer number (170401989).

Almost surely, 2^340803977 is an apocalyptic number.

It is an amenable number.

340803977 is a deficient number, since it is larger than the sum of its proper divisors (1).

340803977 is an equidigital number, since it uses as much as digits as its factorization.

340803977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 340803977 is about 18460.8769293336. The cubic root of 340803977 is about 698.5029072472.

The spelling of 340803977 in words is "three hundred forty million, eight hundred three thousand, nine hundred seventy-seven".