3402004421 has 2 divisors, whose sum is σ = 3402004422. Its totient is φ = 3402004420.

The previous prime is 3402004399. The next prime is 3402004433. The reversal of 3402004421 is 1244002043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2906719396 + 495285025 = 53914^2 + 22255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3402004421 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3402004393 and 3402004402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3402003421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1701002210 + 1701002211.

It is an arithmetic number, because the mean of its divisors is an integer number (1701002211).

Almost surely, 2^3402004421 is an apocalyptic number.

It is an amenable number.

3402004421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3402004421 is an equidigital number, since it uses as much as digits as its factorization.

3402004421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 3402004421 is about 58326.7041842757. The cubic root of 3402004421 is about 1503.9900319820.

Adding to 3402004421 its reverse (1244002043), we get a palindrome (4646006464).

The spelling of 3402004421 in words is "three billion, four hundred two million, four thousand, four hundred twenty-one".