1423217349 has 6 divisors (see below), whose sum is σ = 2055758406. Its totient is φ = 948811560.

The previous prime is 1423217333. The next prime is 1423217353. The reversal of 1423217349 is 9437123241.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1420913025 + 2304324 = 37695^2 + 1518^2 .

It is not a de Polignac number, because 1423217349 - 2⁴ = 1423217333 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423213349) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79067622 + ... + 79067639.

It is an arithmetic number, because the mean of its divisors is an integer number (342626401).

Almost surely, 2^1423217349 is an apocalyptic number.

It is an amenable number.

1423217349 is a deficient number, since it is larger than the sum of its proper divisors (632541057).

1423217349 is a wasteful number, since it uses less digits than its factorization.

1423217349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158135267 (or 158135264 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 1423217349 is about 37725.5529979350. The cubic root of 1423217349 is about 1124.8391141781.

The spelling of 1423217349 in words is "one billion, four hundred twenty-three million, two hundred seventeen thousand, three hundred forty-nine".