306400079 has 2 divisors, whose sum is σ = 306400080. Its totient is φ = 306400078.

The previous prime is 306400067. The next prime is 306400103. The reversal of 306400079 is 970004603.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-306400079 is a prime.

It is a super-2 number, since 2×306400079² = 187762016822412482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (306400009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153200039 + 153200040.

It is an arithmetic number, because the mean of its divisors is an integer number (153200040).

Almost surely, 2^306400079 is an apocalyptic number.

306400079 is a deficient number, since it is larger than the sum of its proper divisors (1).

306400079 is an equidigital number, since it uses as much as digits as its factorization.

306400079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 306400079 is about 17504.2874462230. The cubic root of 306400079 is about 674.1599638810.

The spelling of 306400079 in words is "three hundred six million, four hundred thousand, seventy-nine".