345451779 has 6 divisors (see below), whose sum is σ = 498985916. Its totient is φ = 230301180.

The previous prime is 345451759. The next prime is 345451793. The reversal of 345451779 is 977154543.

345451779 is a `hidden beast` number, since 34 + 545 + 1 + 7 + 79 = 666.

It is not a de Polignac number, because 345451779 - 2⁸ = 345451523 is a prime.

It is a super-2 number, since 2×345451779² = 238673863228529682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345451709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19191757 + ... + 19191774.

Almost surely, 2^345451779 is an apocalyptic number.

345451779 is a deficient number, since it is larger than the sum of its proper divisors (153534137).

345451779 is a wasteful number, since it uses less digits than its factorization.

345451779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38383537 (or 38383534 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The square root of 345451779 is about 18586.3331240995. Note that the first 3 decimals coincide. The cubic root of 345451779 is about 701.6639185584.

The spelling of 345451779 in words is "three hundred forty-five million, four hundred fifty-one thousand, seven hundred seventy-nine".