39479129 has 2 divisors, whose sum is σ = 39479130. Its totient is φ = 39479128.

The previous prime is 39479123. The next prime is 39479137. The reversal of 39479129 is 92197493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39400729 + 78400 = 6277^2 + 280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39479129 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39479129.

It is not a weakly prime, because it can be changed into another prime (39479123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19739564 + 19739565.

It is an arithmetic number, because the mean of its divisors is an integer number (19739565).

Almost surely, 2^39479129 is an apocalyptic number.

It is an amenable number.

39479129 is a deficient number, since it is larger than the sum of its proper divisors (1).

39479129 is an equidigital number, since it uses as much as digits as its factorization.

39479129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 44.

The square root of 39479129 is about 6283.2419179911. The cubic root of 39479129 is about 340.5042374029.

The spelling of 39479129 in words is "thirty-nine million, four hundred seventy-nine thousand, one hundred twenty-nine".