1154398401 has 12 divisors (see below), whose sum is σ = 1795731028. Its totient is φ = 710398944.

The previous prime is 1154398397. The next prime is 1154398411. The reversal of 1154398401 is 1048934511.

It can be written as a sum of positive squares in 2 ways, for example, as 106193025 + 1048205376 = 10305^2 + 32376^2 .

It is not a de Polignac number, because 1154398401 - 2² = 1154398397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1154398411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4933210 + ... + 4933443.

Almost surely, 2^1154398401 is an apocalyptic number.

It is an amenable number.

1154398401 is a deficient number, since it is larger than the sum of its proper divisors (641332627).

1154398401 is a wasteful number, since it uses less digits than its factorization.

1154398401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9866672 (or 9866669 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 1154398401 is about 33976.4389099270. The cubic root of 1154398401 is about 1049.0235520973.

The spelling of 1154398401 in words is "one billion, one hundred fifty-four million, three hundred ninety-eight thousand, four hundred one".