1397286901 has 4 divisors (see below), whose sum is σ = 1442360704. Its totient is φ = 1352213100.

The previous prime is 1397286871. The next prime is 1397286937. The reversal of 1397286901 is 1096827931.

It is a happy number.

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: 1096827931 = 9011 ⋅121721.

It is a cyclic number.

It is not a de Polignac number, because 1397286901 - 2¹³ = 1397278709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397286991) 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, 22536855 + ... + 22536916.

It is an arithmetic number, because the mean of its divisors is an integer number (360590176).

Almost surely, 2^1397286901 is an apocalyptic number.

It is an amenable number.

1397286901 is a deficient number, since it is larger than the sum of its proper divisors (45073803).

1397286901 is an equidigital number, since it uses as much as digits as its factorization.

1397286901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45073802.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 1397286901 is about 37380.3009752463. The cubic root of 1397286901 is about 1117.9658286113.

The spelling of 1397286901 in words is "one billion, three hundred ninety-seven million, two hundred eighty-six thousand, nine hundred one".