390454545 has 16 divisors (see below), whose sum is σ = 672783552. Its totient is φ = 192223680.

The previous prime is 390454543. The next prime is 390454613. The reversal of 390454545 is 545454093.

It is not a de Polignac number, because 390454545 - 2¹ = 390454543 is a prime.

It is a super-2 number, since 2×390454545² = 304909503422314050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

390454545 is a modest number, since divided by 454545 gives 390 as remainder.

It is not an unprimeable number, because it can be changed into a prime (390454543) 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, 1000971 + ... + 1001360.

It is an arithmetic number, because the mean of its divisors is an integer number (42048972).

Almost surely, 2^390454545 is an apocalyptic number.

It is an amenable number.

390454545 is a deficient number, since it is larger than the sum of its proper divisors (282329007).

390454545 is a wasteful number, since it uses less digits than its factorization.

390454545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002352.

The product of its (nonzero) digits is 216000, while the sum is 39.

The square root of 390454545 is about 19759.9226972172. The cubic root of 390454545 is about 730.8980908822.

The spelling of 390454545 in words is "three hundred ninety million, four hundred fifty-four thousand, five hundred forty-five".