3491549399 has 4 divisors (see below), whose sum is σ = 3760130136. Its totient is φ = 3222968664.

The previous prime is 3491549393. The next prime is 3491549401. The reversal of 3491549399 is 9939451943.

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 3491549399 - 2⁸ = 3491549143 is a prime.

It is a super-2 number, since 2×3491549399² = 24381834411314522402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3491549393) 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, 134290349 + ... + 134290374.

It is an arithmetic number, because the mean of its divisors is an integer number (940032534).

Almost surely, 2^3491549399 is an apocalyptic number.

3491549399 is a deficient number, since it is larger than the sum of its proper divisors (268580737).

3491549399 is a wasteful number, since it uses less digits than its factorization.

3491549399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268580736.

The product of its digits is 4723920, while the sum is 56.

The square root of 3491549399 is about 59089.3340544637. The cubic root of 3491549399 is about 1517.0715486990.

The spelling of 3491549399 in words is "three billion, four hundred ninety-one million, five hundred forty-nine thousand, three hundred ninety-nine".