3927388465 has 72 divisors (see below), whose sum is σ = 6476899968. Its totient is φ = 2259653760.

The previous prime is 3927388447. The next prime is 3927388511. The reversal of 3927388465 is 5648837293.

It is not a de Polignac number, because 3927388465 - 2¹⁵ = 3927355697 is a prime.

It is a super-3 number, since 3×3927388465³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 451144 + ... + 459766.

It is an arithmetic number, because the mean of its divisors is an integer number (89956944).

Almost surely, 2^3927388465 is an apocalyptic number.

3927388465 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3927388465 is a deficient number, since it is larger than the sum of its proper divisors (2549511503).

3927388465 is a wasteful number, since it uses less digits than its factorization.

3927388465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8679 (or 8659 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 55.

The square root of 3927388465 is about 62668.8795575603. The cubic root of 3927388465 is about 1577.7370350638.

The spelling of 3927388465 in words is "three billion, nine hundred twenty-seven million, three hundred eighty-eight thousand, four hundred sixty-five".