43867949 has 2 divisors, whose sum is σ = 43867950. Its totient is φ = 43867948.

The previous prime is 43867937. The next prime is 43867961. The reversal of 43867949 is 94976834.

It is a balanced prime because it is at equal distance from previous prime (43867937) and next prime (43867961).

It can be written as a sum of positive squares in only one way, i.e., 31158724 + 12709225 = 5582^2 + 3565^2 .

It is a cyclic number.

It is not a de Polignac number, because 43867949 - 2²⁰ = 42819373 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 43867897 and 43867906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43867249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21933974 + 21933975.

It is an arithmetic number, because the mean of its divisors is an integer number (21933975).

Almost surely, 2^43867949 is an apocalyptic number.

It is an amenable number.

43867949 is a deficient number, since it is larger than the sum of its proper divisors (1).

43867949 is an equidigital number, since it uses as much as digits as its factorization.

43867949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 50.

The square root of 43867949 is about 6623.2883826691. The cubic root of 43867949 is about 352.6813084013.

The spelling of 43867949 in words is "forty-three million, eight hundred sixty-seven thousand, nine hundred forty-nine".