3494140991 has 16 divisors (see below), whose sum is σ = 4010313888. Its totient is φ = 3015244800.

The previous prime is 3494140987. The next prime is 3494141003. The reversal of 3494140991 is 1990414943.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3494140991 - 2² = 3494140987 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 (3494140921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88010 + ... + 121383.

It is an arithmetic number, because the mean of its divisors is an integer number (250644618).

Almost surely, 2^3494140991 is an apocalyptic number.

3494140991 is a deficient number, since it is larger than the sum of its proper divisors (516172897).

3494140991 is a wasteful number, since it uses less digits than its factorization.

3494140991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209482.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 3494140991 is about 59111.2594266101. The cubic root of 3494140991 is about 1517.4468031294.

The spelling of 3494140991 in words is "three billion, four hundred ninety-four million, one hundred forty thousand, nine hundred ninety-one".