49279661 has 2 divisors, whose sum is σ = 49279662. Its totient is φ = 49279660.

The previous prime is 49279619. The next prime is 49279667. The reversal of 49279661 is 16697294.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43428100 + 5851561 = 6590^2 + 2419^2 .

It is a cyclic number.

It is not a de Polignac number, because 49279661 - 2¹⁰ = 49278637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49279667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24639830 + 24639831.

It is an arithmetic number, because the mean of its divisors is an integer number (24639831).

Almost surely, 2^49279661 is an apocalyptic number.

It is an amenable number.

49279661 is a deficient number, since it is larger than the sum of its proper divisors (1).

49279661 is an equidigital number, since it uses as much as digits as its factorization.

49279661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The square root of 49279661 is about 7019.9473644750. The cubic root of 49279661 is about 366.6254174901.

The spelling of 49279661 in words is "forty-nine million, two hundred seventy-nine thousand, six hundred sixty-one".