34390387 has 4 divisors (see below), whose sum is σ = 34448400. Its totient is φ = 34332376.

The previous prime is 34390357. The next prime is 34390393. The reversal of 34390387 is 78309343.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 34390387 - 2¹⁵ = 34357619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34390327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28108 + ... + 29305.

It is an arithmetic number, because the mean of its divisors is an integer number (8612100).

Almost surely, 2^34390387 is an apocalyptic number.

34390387 is a deficient number, since it is larger than the sum of its proper divisors (58013).

34390387 is an equidigital number, since it uses as much as digits as its factorization.

34390387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58012.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 34390387 is about 5864.3317607380. The cubic root of 34390387 is about 325.1963689016.

The spelling of 34390387 in words is "thirty-four million, three hundred ninety thousand, three hundred eighty-seven".