999154457 has 8 divisors (see below), whose sum is σ = 1144741632. Its totient is φ = 854280000.

The previous prime is 999154427. The next prime is 999154469. The reversal of 999154457 is 754451999.

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

It is not a de Polignac number, because 999154457 - 2¹⁸ = 998892313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 999154399 and 999154408.

It is not an unprimeable number, because it can be changed into a prime (999154427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175169 + ... + 180782.

It is an arithmetic number, because the mean of its divisors is an integer number (143092704).

Almost surely, 2^999154457 is an apocalyptic number.

It is an amenable number.

999154457 is a deficient number, since it is larger than the sum of its proper divisors (145587175).

999154457 is a wasteful number, since it uses less digits than its factorization.

999154457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356359.

The product of its digits is 2041200, while the sum is 53.

The square root of 999154457 is about 31609.4045657301. The cubic root of 999154457 is about 999.7180728579.

The spelling of 999154457 in words is "nine hundred ninety-nine million, one hundred fifty-four thousand, four hundred fifty-seven".