109739381 has 2 divisors, whose sum is σ = 109739382. Its totient is φ = 109739380.

The previous prime is 109739359. The next prime is 109739387. The reversal of 109739381 is 183937901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86304100 + 23435281 = 9290^2 + 4841^2 .

It is a cyclic number.

It is not a de Polignac number, because 109739381 - 2⁶ = 109739317 is a prime.

It is a super-2 number, since 2×109739381² = 24085463484526322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109739387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54869690 + 54869691.

It is an arithmetic number, because the mean of its divisors is an integer number (54869691).

Almost surely, 2^109739381 is an apocalyptic number.

It is an amenable number.

109739381 is a deficient number, since it is larger than the sum of its proper divisors (1).

109739381 is an equidigital number, since it uses as much as digits as its factorization.

109739381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 109739381 is about 10475.6565904004. The cubic root of 109739381 is about 478.7632819044.

The spelling of 109739381 in words is "one hundred nine million, seven hundred thirty-nine thousand, three hundred eighty-one".