2198407 has 2 divisors, whose sum is σ = 2198408. Its totient is φ = 2198406.

The previous prime is 2198401. The next prime is 2198411. The reversal of 2198407 is 7048912.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2198407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2198401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099203 + 1099204.

It is an arithmetic number, because the mean of its divisors is an integer number (1099204).

2^2198407 is an apocalyptic number.

2198407 is a deficient number, since it is larger than the sum of its proper divisors (1).

2198407 is an equidigital number, since it uses as much as digits as its factorization.

2198407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 2198407 is about 1482.7025999842. The cubic root of 2198407 is about 130.0277455572.

The spelling of 2198407 in words is "two million, one hundred ninety-eight thousand, four hundred seven".