390734292 has 96 divisors (see below), whose sum is σ = 1037639680. Its totient is φ = 113581440.

The previous prime is 390734291. The next prime is 390734303. The reversal of 390734292 is 292437093.

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

It is a self number, because there is not a number n which added to its sum of digits gives 390734292.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390734291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 207009 + ... + 208887.

Almost surely, 2^390734292 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390734292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518819840).

390734292 is an abundant number, since it is smaller than the sum of its proper divisors (646905388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

390734292 is a wasteful number, since it uses less digits than its factorization.

390734292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973 (or 1971 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 390734292 is about 19767.0000758840. Note that the first 4 decimals coincide. The cubic root of 390734292 is about 731.0726035020.

It can be divided in two parts, 39073 and 4292, that added together give a triangular number (43365 = T₂₉₄).

The spelling of 390734292 in words is "three hundred ninety million, seven hundred thirty-four thousand, two hundred ninety-two".