1423385972 has 6 divisors (see below), whose sum is σ = 2490925458. Its totient is φ = 711692984.

The previous prime is 1423385963. The next prime is 1423386103. The reversal of 1423385972 is 2795833241.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 755370256 + 668015716 = 27484^2 + 25846^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177923243 + ... + 177923250.

It is an arithmetic number, because the mean of its divisors is an integer number (415154243).

Almost surely, 2^1423385972 is an apocalyptic number.

It is an amenable number.

1423385972 is a deficient number, since it is larger than the sum of its proper divisors (1067539486).

1423385972 is a wasteful number, since it uses less digits than its factorization.

1423385972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355846497 (or 355846495 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 1423385972 is about 37727.7877962650. The cubic root of 1423385972 is about 1124.8835361247.

The spelling of 1423385972 in words is "one billion, four hundred twenty-three million, three hundred eighty-five thousand, nine hundred seventy-two".