1423858947 has 32 divisors (see below), whose sum is σ = 2239017984. Its totient is φ = 787929600.

The previous prime is 1423858897. The next prime is 1423858963. The reversal of 1423858947 is 7498583241.

It is a happy number.

It is not a de Polignac number, because 1423858947 - 2⁷ = 1423858819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1423858947.

It is not an unprimeable number, because it can be changed into a prime (1423858967) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111922 + ... + 123992.

It is an arithmetic number, because the mean of its divisors is an integer number (69969312).

Almost surely, 2^1423858947 is an apocalyptic number.

1423858947 is a deficient number, since it is larger than the sum of its proper divisors (815159037).

1423858947 is a wasteful number, since it uses less digits than its factorization.

1423858947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12259.

The product of its digits is 1935360, while the sum is 51.

The square root of 1423858947 is about 37734.0555334303. The cubic root of 1423858947 is about 1125.0081176698.

The spelling of 1423858947 in words is "one billion, four hundred twenty-three million, eight hundred fifty-eight thousand, nine hundred forty-seven".