3949494931 has 2 divisors, whose sum is σ = 3949494932. Its totient is φ = 3949494930.

The previous prime is 3949494911. The next prime is 3949494937. The reversal of 3949494931 is 1394949493.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3949494931 - 2¹⁵ = 3949462163 is a prime.

It is a super-2 number, since 2×3949494931² = 31197020419989389522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3949494937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1974747465 + 1974747466.

It is an arithmetic number, because the mean of its divisors is an integer number (1974747466).

Almost surely, 2^3949494931 is an apocalyptic number.

3949494931 is a deficient number, since it is larger than the sum of its proper divisors (1).

3949494931 is an equidigital number, since it uses as much as digits as its factorization.

3949494931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3779136, while the sum is 55.

The square root of 3949494931 is about 62845.0072082103. The cubic root of 3949494931 is about 1580.6917511197.

The spelling of 3949494931 in words is "three billion, nine hundred forty-nine million, four hundred ninety-four thousand, nine hundred thirty-one".