39879001 has 2 divisors, whose sum is σ = 39879002. Its totient is φ = 39879000.

The previous prime is 39878959. The next prime is 39879023. The reversal of 39879001 is 10097893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39702601 + 176400 = 6301^2 + 420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39879001 is a prime.

It is not a weakly prime, because it can be changed into another prime (39879041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19939500 + 19939501.

It is an arithmetic number, because the mean of its divisors is an integer number (19939501).

Almost surely, 2^39879001 is an apocalyptic number.

39879001 is the 3376-th centered heptagonal number.

It is an amenable number.

39879001 is a deficient number, since it is larger than the sum of its proper divisors (1).

39879001 is an equidigital number, since it uses as much as digits as its factorization.

39879001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 39879001 is about 6314.9822644248. The cubic root of 39879001 is about 341.6499987374.

The spelling of 39879001 in words is "thirty-nine million, eight hundred seventy-nine thousand, one".