438053690 has 16 divisors (see below), whose sum is σ = 789806592. Its totient is φ = 174930384.

The previous prime is 438053687. The next prime is 438053711. The reversal of 438053690 is 96350834.

It is a super-2 number, since 2×438053690² = 383782070645232200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30014 + ... + 42153.

It is an arithmetic number, because the mean of its divisors is an integer number (49362912).

Almost surely, 2^438053690 is an apocalyptic number.

438053690 is a deficient number, since it is larger than the sum of its proper divisors (351752902).

438053690 is a wasteful number, since it uses less digits than its factorization.

438053690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72781.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 438053690 is about 20929.7322008668. The cubic root of 438053690 is about 759.4673610951.

The spelling of 438053690 in words is "four hundred thirty-eight million, fifty-three thousand, six hundred ninety".