39950479 has 2 divisors, whose sum is σ = 39950480. Its totient is φ = 39950478.

The previous prime is 39950467. The next prime is 39950497. The reversal of 39950479 is 97405993.

Together with next prime (39950497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39950479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39950419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19975239 + 19975240.

It is an arithmetic number, because the mean of its divisors is an integer number (19975240).

Almost surely, 2^39950479 is an apocalyptic number.

39950479 is a deficient number, since it is larger than the sum of its proper divisors (1).

39950479 is an equidigital number, since it uses as much as digits as its factorization.

39950479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 39950479 is about 6320.6391290755. The cubic root of 39950479 is about 341.8539981885.

The spelling of 39950479 in words is "thirty-nine million, nine hundred fifty thousand, four hundred seventy-nine".