3427377991 has 4 divisors (see below), whose sum is σ = 3427549992. Its totient is φ = 3427205992.

The previous prime is 3427377983. The next prime is 3427378037. The reversal of 3427377991 is 1997737243.

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 3427377991 - 2³ = 3427377983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3427377911) 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, 51496 + ... + 97501.

It is an arithmetic number, because the mean of its divisors is an integer number (856887498).

Almost surely, 2^3427377991 is an apocalyptic number.

3427377991 is a deficient number, since it is larger than the sum of its proper divisors (172001).

3427377991 is a wasteful number, since it uses less digits than its factorization.

3427377991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172000.

The product of its digits is 2000376, while the sum is 52.

The square root of 3427377991 is about 58543.8125765653. The cubic root of 3427377991 is about 1507.7199029424.

The spelling of 3427377991 in words is "three billion, four hundred twenty-seven million, three hundred seventy-seven thousand, nine hundred ninety-one".