8401949 has 2 divisors, whose sum is σ = 8401950. Its totient is φ = 8401948.

The previous prime is 8401919. The next prime is 8401963. The reversal of 8401949 is 9491048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5784025 + 2617924 = 2405^2 + 1618^2 .

It is a cyclic number.

It is not a de Polignac number, because 8401949 - 2¹⁶ = 8336413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8401919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4200974 + 4200975.

It is an arithmetic number, because the mean of its divisors is an integer number (4200975).

Almost surely, 2^8401949 is an apocalyptic number.

It is an amenable number.

8401949 is a deficient number, since it is larger than the sum of its proper divisors (1).

8401949 is an equidigital number, since it uses as much as digits as its factorization.

8401949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 8401949 is about 2898.6115641803. The cubic root of 8401949 is about 203.2949920242.

The spelling of 8401949 in words is "eight million, four hundred one thousand, nine hundred forty-nine".