39102149 has 4 divisors (see below), whose sum is σ = 39141036. Its totient is φ = 39063264.

The previous prime is 39102143. The next prime is 39102197. The reversal of 39102149 is 94120193.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17181025 + 21921124 = 4145^2 + 4682^2 .

It is a cyclic number.

It is not a de Polignac number, because 39102149 - 2¹² = 39098053 is a prime.

It is a super-3 number, since 3×39102149³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39102143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17894 + ... + 19959.

It is an arithmetic number, because the mean of its divisors is an integer number (9785259).

Almost surely, 2^39102149 is an apocalyptic number.

It is an amenable number.

39102149 is a deficient number, since it is larger than the sum of its proper divisors (38887).

39102149 is a wasteful number, since it uses less digits than its factorization.

39102149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38886.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 39102149 is about 6253.1711155221. The cubic root of 39102149 is about 339.4169621291.

The spelling of 39102149 in words is "thirty-nine million, one hundred two thousand, one hundred forty-nine".