354457969 has 2 divisors, whose sum is σ = 354457970. Its totient is φ = 354457968.

The previous prime is 354457949. The next prime is 354457979. The reversal of 354457969 is 969754453.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348307569 + 6150400 = 18663^2 + 2480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354457969 is a prime.

It is a super-2 number, since 2×354457969² = 251280903575209922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (354457949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177228984 + 177228985.

It is an arithmetic number, because the mean of its divisors is an integer number (177228985).

Almost surely, 2^354457969 is an apocalyptic number.

It is an amenable number.

354457969 is a deficient number, since it is larger than the sum of its proper divisors (1).

354457969 is an equidigital number, since it uses as much as digits as its factorization.

354457969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 52.

The square root of 354457969 is about 18827.0541774331. The cubic root of 354457969 is about 707.7093198776.

The spelling of 354457969 in words is "three hundred fifty-four million, four hundred fifty-seven thousand, nine hundred sixty-nine".