1423432949 has 4 divisors (see below), whose sum is σ = 1423637664. Its totient is φ = 1423228236.

The previous prime is 1423432939. The next prime is 1423432951. The reversal of 1423432949 is 9492343241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9492343241 = 617 ⋅15384673.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423432949 is a prime.

It is a super-2 number, since 2×1423432949² = 4052322720597673202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423432939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91547 + ... + 105960.

It is an arithmetic number, because the mean of its divisors is an integer number (355909416).

Almost surely, 2^1423432949 is an apocalyptic number.

It is an amenable number.

1423432949 is a deficient number, since it is larger than the sum of its proper divisors (204715).

1423432949 is an equidigital number, since it uses as much as digits as its factorization.

1423432949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204714.

The product of its digits is 186624, while the sum is 41.

The square root of 1423432949 is about 37728.4103693755. The cubic root of 1423432949 is about 1124.8959110939.

The spelling of 1423432949 in words is "one billion, four hundred twenty-three million, four hundred thirty-two thousand, nine hundred forty-nine".