1397222936 has 8 divisors (see below), whose sum is σ = 2619793020. Its totient is φ = 698611464.

The previous prime is 1397222933. The next prime is 1397222963. The reversal of 1397222936 is 6392227931.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397222933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87326426 + ... + 87326441.

Almost surely, 2^1397222936 is an apocalyptic number.

It is an amenable number.

1397222936 is a deficient number, since it is larger than the sum of its proper divisors (1222570084).

1397222936 is a wasteful number, since it uses less digits than its factorization.

1397222936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174652873 (or 174652869 counting only the distinct ones).

The product of its digits is 244944, while the sum is 44.

The square root of 1397222936 is about 37379.4453677419. The cubic root of 1397222936 is about 1117.9487689377.

The spelling of 1397222936 in words is "one billion, three hundred ninety-seven million, two hundred twenty-two thousand, nine hundred thirty-six".