3493276421 has 2 divisors, whose sum is σ = 3493276422. Its totient is φ = 3493276420.

The previous prime is 3493276387. The next prime is 3493276453. The reversal of 3493276421 is 1246723943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3485603521 + 7672900 = 59039^2 + 2770^2 .

It is a cyclic number.

It is not a de Polignac number, because 3493276421 - 2²² = 3489082117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3493276321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1746638210 + 1746638211.

It is an arithmetic number, because the mean of its divisors is an integer number (1746638211).

Almost surely, 2^3493276421 is an apocalyptic number.

It is an amenable number.

3493276421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3493276421 is an equidigital number, since it uses as much as digits as its factorization.

3493276421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 41.

The square root of 3493276421 is about 59103.9459004219. The cubic root of 3493276421 is about 1517.3216367240.

The spelling of 3493276421 in words is "three billion, four hundred ninety-three million, two hundred seventy-six thousand, four hundred twenty-one".