999453547 has 16 divisors (see below), whose sum is σ = 1048320000. Its totient is φ = 951724800.

The previous prime is 999453527. The next prime is 999453557. The reversal of 999453547 is 745354999.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-999453547 is a prime.

It is a super-2 number, since 2×999453547² = 1997814785221762418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999453517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 799579 + ... + 800827.

It is an arithmetic number, because the mean of its divisors is an integer number (65520000).

Almost surely, 2^999453547 is an apocalyptic number.

999453547 is the 25813-rd pentagonal number.

999453547 is a deficient number, since it is larger than the sum of its proper divisors (48866453).

999453547 is a wasteful number, since it uses less digits than its factorization.

999453547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674.

The product of its digits is 6123600, while the sum is 55.

The square root of 999453547 is about 31614.1352404269. The cubic root of 999453547 is about 999.8178158109.

It can be divided in two parts, 999453 and 547, that added together give a 6-th power (1000000 = 10⁶).

The spelling of 999453547 in words is "nine hundred ninety-nine million, four hundred fifty-three thousand, five hundred forty-seven".