1953949 has 2 divisors, whose sum is σ = 1953950. Its totient is φ = 1953948.

The previous prime is 1953943. The next prime is 1953967. The reversal of 1953949 is 9493591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1170724 + 783225 = 1082^2 + 885^2 .

It is a cyclic number.

It is not a de Polignac number, because 1953949 - 2⁷ = 1953821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1953943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 976974 + 976975.

It is an arithmetic number, because the mean of its divisors is an integer number (976975).

2^1953949 is an apocalyptic number.

It is an amenable number.

1953949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1953949 is an equidigital number, since it uses as much as digits as its factorization.

1953949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43740, while the sum is 40.

The square root of 1953949 is about 1397.8372580526. The cubic root of 1953949 is about 125.0175761952.

The spelling of 1953949 in words is "one million, nine hundred fifty-three thousand, nine hundred forty-nine".