49946989 has 2 divisors, whose sum is σ = 49946990. Its totient is φ = 49946988.

The previous prime is 49946987. The next prime is 49946999. The reversal of 49946989 is 98964994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48191364 + 1755625 = 6942^2 + 1325^2 .

It is a cyclic number.

It is not a de Polignac number, because 49946989 - 2¹ = 49946987 is a prime.

It is a super-2 number, since 2×49946989² = 4989403420332242, which contains 22 as substring.

Together with 49946987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49946987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24973494 + 24973495.

It is an arithmetic number, because the mean of its divisors is an integer number (24973495).

Almost surely, 2^49946989 is an apocalyptic number.

It is an amenable number.

49946989 is a deficient number, since it is larger than the sum of its proper divisors (1).

49946989 is an equidigital number, since it uses as much as digits as its factorization.

49946989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5038848, while the sum is 58.

The square root of 49946989 is about 7067.3183740369. The cubic root of 49946989 is about 368.2729076956.

The spelling of 49946989 in words is "forty-nine million, nine hundred forty-six thousand, nine hundred eighty-nine".