3897771926 has 16 divisors (see below), whose sum is σ = 5870312448. Its totient is φ = 1941013800.

The previous prime is 3897771877. The next prime is 3897771931. The reversal of 3897771926 is 6291777983.

3897771926 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3897771926² = 30385251974227498952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 812531 + ... + 817313.

It is an arithmetic number, because the mean of its divisors is an integer number (366894528).

Almost surely, 2^3897771926 is an apocalyptic number.

3897771926 is a deficient number, since it is larger than the sum of its proper divisors (1972540522).

3897771926 is a wasteful number, since it uses less digits than its factorization.

3897771926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6347.

The product of its digits is 8001504, while the sum is 59.

The square root of 3897771926 is about 62432.1385666069. The cubic root of 3897771926 is about 1573.7611053247.

The spelling of 3897771926 in words is "three billion, eight hundred ninety-seven million, seven hundred seventy-one thousand, nine hundred twenty-six".