1154041399 has 32 divisors (see below), whose sum is σ = 1498752000. Its totient is φ = 865396224.

The previous prime is 1154041387. The next prime is 1154041463. The reversal of 1154041399 is 9931404511.

It is not a de Polignac number, because 1154041399 - 2¹⁷ = 1153910327 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 (1154041319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82207 + ... + 95215.

It is an arithmetic number, because the mean of its divisors is an integer number (46836000).

Almost surely, 2^1154041399 is an apocalyptic number.

1154041399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1154041399 is a deficient number, since it is larger than the sum of its proper divisors (344710601).

1154041399 is a wasteful number, since it uses less digits than its factorization.

1154041399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13087.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 1154041399 is about 33971.1848336204. The cubic root of 1154041399 is about 1048.9154028027.

It can be divided in two parts, 1154041 and 399, that added together give a triangular number (1154440 = T₁₅₁₉).

The spelling of 1154041399 in words is "one billion, one hundred fifty-four million, forty-one thousand, three hundred ninety-nine".