3491923 has 2 divisors, whose sum is σ = 3491924. Its totient is φ = 3491922.

The previous prime is 3491899. The next prime is 3491927. The reversal of 3491923 is 3291943.

It is a strong prime.

It is an emirp because it is prime and its reverse (3291943) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3491923 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (3491927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1745961 + 1745962.

It is an arithmetic number, because the mean of its divisors is an integer number (1745962).

Almost surely, 2^3491923 is an apocalyptic number.

3491923 is a deficient number, since it is larger than the sum of its proper divisors (1).

3491923 is an equidigital number, since it uses as much as digits as its factorization.

3491923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 31.

The square root of 3491923 is about 1868.6687774991. The cubic root of 3491923 is about 151.7125656410.

The spelling of 3491923 in words is "three million, four hundred ninety-one thousand, nine hundred twenty-three".