1397224977 has 8 divisors (see below), whose sum is σ = 1902604416. Its totient is φ = 911664432.

The previous prime is 1397224967. The next prime is 1397225003. The reversal of 1397224977 is 7794227931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1397224977 - 2²⁶ = 1330116113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1397224967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4954558 + ... + 4954839.

It is an arithmetic number, because the mean of its divisors is an integer number (237825552).

Almost surely, 2^1397224977 is an apocalyptic number.

It is an amenable number.

1397224977 is a deficient number, since it is larger than the sum of its proper divisors (505379439).

1397224977 is an equidigital number, since it uses as much as digits as its factorization.

1397224977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9909447.

The product of its digits is 1333584, while the sum is 51.

The square root of 1397224977 is about 37379.4726688326. The cubic root of 1397224977 is about 1117.9493132871.

The spelling of 1397224977 in words is "one billion, three hundred ninety-seven million, two hundred twenty-four thousand, nine hundred seventy-seven".