2197887405 has 40 divisors (see below), whose sum is σ = 4102546272. Its totient is φ = 1004732064.

The previous prime is 2197887397. The next prime is 2197887413. The reversal of 2197887405 is 5047887912.

It is an interprime number because it is at equal distance from previous prime (2197887397) and next prime (2197887413).

It is not a de Polignac number, because 2197887405 - 2³ = 2197887397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5502 + ... + 66528.

Almost surely, 2^2197887405 is an apocalyptic number.

It is an amenable number.

2197887405 is a deficient number, since it is larger than the sum of its proper divisors (1904658867).

2197887405 is an frugal number, since it uses more digits than its factorization.

2197887405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61063 (or 61042 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 51.

The square root of 2197887405 is about 46881.6318508646. The cubic root of 2197887405 is about 1300.1750070114.

The spelling of 2197887405 in words is "two billion, one hundred ninety-seven million, eight hundred eighty-seven thousand, four hundred five".