3907492217 has 4 divisors (see below), whose sum is σ = 3936014196. Its totient is φ = 3878970240.

The previous prime is 3907492213. The next prime is 3907492261. The reversal of 3907492217 is 7122947093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7122947093 = 107 ⋅66569599.

It can be written as a sum of positive squares in 2 ways, for example, as 3413363776 + 494128441 = 58424^2 + 22229^2 .

It is a cyclic number.

It is not a de Polignac number, because 3907492217 - 2² = 3907492213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3907492213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14260784 + ... + 14261057.

It is an arithmetic number, because the mean of its divisors is an integer number (984003549).

Almost surely, 2^3907492217 is an apocalyptic number.

It is an amenable number.

3907492217 is a deficient number, since it is larger than the sum of its proper divisors (28521979).

3907492217 is a wasteful number, since it uses less digits than its factorization.

3907492217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28521978.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 3907492217 is about 62509.9369460568. The cubic root of 3907492217 is about 1575.0682381789.

The spelling of 3907492217 in words is "three billion, nine hundred seven million, four hundred ninety-two thousand, two hundred seventeen".