3951490937 has 4 divisors (see below), whose sum is σ = 3951906660. Its totient is φ = 3951075216.

The previous prime is 3951490927. The next prime is 3951490969. The reversal of 3951490937 is 7390941593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7390941593 = 7 ⋅1055848799.

It can be written as a sum of positive squares in 2 ways, for example, as 2166343936 + 1785147001 = 46544^2 + 42251^2 .

It is a cyclic number.

It is not a de Polignac number, because 3951490937 - 2¹⁸ = 3951228793 is a prime.

It is a super-2 number, since 2×3951490937² = 31228561250386275938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3951490927) 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, 193262 + ... + 212727.

It is an arithmetic number, because the mean of its divisors is an integer number (987976665).

Almost surely, 2^3951490937 is an apocalyptic number.

It is an amenable number.

3951490937 is a deficient number, since it is larger than the sum of its proper divisors (415723).

3951490937 is an equidigital number, since it uses as much as digits as its factorization.

3951490937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415722.

The product of its (nonzero) digits is 918540, while the sum is 50.

The square root of 3951490937 is about 62860.8855887347. The cubic root of 3951490937 is about 1580.9579909739.

The spelling of 3951490937 in words is "three billion, nine hundred fifty-one million, four hundred ninety thousand, nine hundred thirty-seven".