946391890 has 32 divisors (see below), whose sum is σ = 1721948544. Its totient is φ = 374478720.

The previous prime is 946391869. The next prime is 946391899. The reversal of 946391890 is 98193649.

It is not an unprimeable number, because it can be changed into a prime (946391899) 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, 452427 + ... + 454513.

It is an arithmetic number, because the mean of its divisors is an integer number (53810892).

Almost surely, 2^946391890 is an apocalyptic number.

946391890 is a deficient number, since it is larger than the sum of its proper divisors (775556654).

946391890 is a wasteful number, since it uses less digits than its factorization.

946391890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 946391890 is about 30763.4830602778. The cubic root of 946391890 is about 981.8014518884.

The spelling of 946391890 in words is "nine hundred forty-six million, three hundred ninety-one thousand, eight hundred ninety".