109640407 has 2 divisors, whose sum is σ = 109640408. Its totient is φ = 109640406.

The previous prime is 109640383. The next prime is 109640417. The reversal of 109640407 is 704046901.

It is a strong prime.

It is an emirp because it is prime and its reverse (704046901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109640407 is a prime.

It is a Chen prime.

It is equal to p_6283840 and since 109640407 and 6283840 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109640417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54820203 + 54820204.

It is an arithmetic number, because the mean of its divisors is an integer number (54820204).

Almost surely, 2^109640407 is an apocalyptic number.

109640407 is a deficient number, since it is larger than the sum of its proper divisors (1).

109640407 is an equidigital number, since it uses as much as digits as its factorization.

109640407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 109640407 is about 10470.9315249408. The cubic root of 109640407 is about 478.6193063345.

The spelling of 109640407 in words is "one hundred nine million, six hundred forty thousand, four hundred seven".