814901397 has 4 divisors (see below), whose sum is σ = 1086535200. Its totient is φ = 543267596.

The previous prime is 814901359. The next prime is 814901419. The reversal of 814901397 is 793109418.

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.

It is a cyclic number.

It is not a de Polignac number, because 814901397 - 2¹² = 814897301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814901797) 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, 135816897 + ... + 135816902.

It is an arithmetic number, because the mean of its divisors is an integer number (271633800).

Almost surely, 2^814901397 is an apocalyptic number.

It is an amenable number.

814901397 is a deficient number, since it is larger than the sum of its proper divisors (271633803).

814901397 is a wasteful number, since it uses less digits than its factorization.

814901397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271633802.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 814901397 is about 28546.4778387807. The cubic root of 814901397 is about 934.0461917770.

The spelling of 814901397 in words is "eight hundred fourteen million, nine hundred one thousand, three hundred ninety-seven".