385294921 has 8 divisors (see below), whose sum is σ = 430097184. Its totient is φ = 342121920.

The previous prime is 385294883. The next prime is 385294927. The reversal of 385294921 is 129492583.

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

It is a cyclic number.

It is not a de Polignac number, because 385294921 - 2¹³ = 385286729 is a prime.

It is a super-2 number, since 2×385294921² = 296904352296792482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an alternating number because its digits alternate between odd and even.

It is a pancake number, because a pancake can be divided into 385294921 parts by 27759 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (385294927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406816 + ... + 407761.

It is an arithmetic number, because the mean of its divisors is an integer number (53762148).

Almost surely, 2^385294921 is an apocalyptic number.

It is an amenable number.

385294921 is a deficient number, since it is larger than the sum of its proper divisors (44802263).

385294921 is a wasteful number, since it uses less digits than its factorization.

385294921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814631.

The product of its digits is 155520, while the sum is 43.

The square root of 385294921 is about 19628.9307146365. The cubic root of 385294921 is about 727.6643439409.

The spelling of 385294921 in words is "three hundred eighty-five million, two hundred ninety-four thousand, nine hundred twenty-one".