351422749 has 2 divisors, whose sum is σ = 351422750. Its totient is φ = 351422748.

The previous prime is 351422741. The next prime is 351422777. The reversal of 351422749 is 947224153.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312759225 + 38663524 = 17685^2 + 6218^2 .

It is a cyclic number.

It is not a de Polignac number, because 351422749 - 2³ = 351422741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (351422741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175711374 + 175711375.

It is an arithmetic number, because the mean of its divisors is an integer number (175711375).

Almost surely, 2^351422749 is an apocalyptic number.

It is an amenable number.

351422749 is a deficient number, since it is larger than the sum of its proper divisors (1).

351422749 is an equidigital number, since it uses as much as digits as its factorization.

351422749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 351422749 is about 18746.2729362399. The cubic root of 351422749 is about 705.6834905278.

The spelling of 351422749 in words is "three hundred fifty-one million, four hundred twenty-two thousand, seven hundred forty-nine".