390152446 has 4 divisors (see below), whose sum is σ = 585228672. Its totient is φ = 195076222.

The previous prime is 390152423. The next prime is 390152447. The reversal of 390152446 is 644251093.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×390152446² = 304437862239565832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390152447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97538110 + ... + 97538113.

It is an arithmetic number, because the mean of its divisors is an integer number (146307168).

Almost surely, 2^390152446 is an apocalyptic number.

390152446 is a deficient number, since it is larger than the sum of its proper divisors (195076226).

390152446 is a wasteful number, since it uses less digits than its factorization.

390152446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195076225.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 390152446 is about 19752.2769826671. The cubic root of 390152446 is about 730.7095409338.

The spelling of 390152446 in words is "three hundred ninety million, one hundred fifty-two thousand, four hundred forty-six".