3401572409 has 2 divisors, whose sum is σ = 3401572410. Its totient is φ = 3401572408.

The previous prime is 3401572303. The next prime is 3401572417. The reversal of 3401572409 is 9042751043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3180396025 + 221176384 = 56395^2 + 14872^2 .

It is an emirp because it is prime and its reverse (9042751043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3401572409 - 2²⁸ = 3133136953 is a prime.

It is not a weakly prime, because it can be changed into another prime (3401572469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1700786204 + 1700786205.

It is an arithmetic number, because the mean of its divisors is an integer number (1700786205).

Almost surely, 2^3401572409 is an apocalyptic number.

It is an amenable number.

3401572409 is a deficient number, since it is larger than the sum of its proper divisors (1).

3401572409 is an equidigital number, since it uses as much as digits as its factorization.

3401572409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 3401572409 is about 58323.0006858358. Note that the first 3 decimals coincide. The cubic root of 3401572409 is about 1503.9263666477.

The spelling of 3401572409 in words is "three billion, four hundred one million, five hundred seventy-two thousand, four hundred nine".