3919390690 has 8 divisors (see below), whose sum is σ = 7054903260. Its totient is φ = 1567756272.

The previous prime is 3919390663. The next prime is 3919390697. The reversal of 3919390690 is 960939193.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3870208521 + 49182169 = 62211^2 + 7013^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×3919390690² = 30723246761717352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3919390697) 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, 195969525 + ... + 195969544.

Almost surely, 2^3919390690 is an apocalyptic number.

3919390690 is a deficient number, since it is larger than the sum of its proper divisors (3135512570).

3919390690 is a wasteful number, since it uses less digits than its factorization.

3919390690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391939076.

The product of its (nonzero) digits is 354294, while the sum is 49.

The square root of 3919390690 is about 62605.0372573965. The cubic root of 3919390690 is about 1576.6653338527.

The spelling of 3919390690 in words is "three billion, nine hundred nineteen million, three hundred ninety thousand, six hundred ninety".