340037779 has 4 divisors (see below), whose sum is σ = 340083576. Its totient is φ = 339991984.

The previous prime is 340037777. The next prime is 340037783. The reversal of 340037779 is 977730043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977730043 = 5107 ⋅191449.

It is a cyclic number.

It is not a de Polignac number, because 340037779 - 2¹ = 340037777 is a prime.

It is a super-2 number, since 2×340037779² = 231251382294505682, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340037777) 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, 8914 + ... + 27559.

It is an arithmetic number, because the mean of its divisors is an integer number (85020894).

Almost surely, 2^340037779 is an apocalyptic number.

340037779 is a deficient number, since it is larger than the sum of its proper divisors (45797).

340037779 is an equidigital number, since it uses as much as digits as its factorization.

340037779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45796.

The product of its (nonzero) digits is 111132, while the sum is 40.

The square root of 340037779 is about 18440.1133131009. The cubic root of 340037779 is about 697.9790546885.

The spelling of 340037779 in words is "three hundred forty million, thirty-seven thousand, seven hundred seventy-nine".