64421092 has 12 divisors (see below), whose sum is σ = 119368620. Its totient is φ = 30315776.

The previous prime is 64421083. The next prime is 64421101. The reversal of 64421092 is 29012446.

It is an interprime number because it is at equal distance from previous prime (64421083) and next prime (64421101).

It can be written as a sum of positive squares in 2 ways, for example, as 52765696 + 11655396 = 7264^2 + 3414^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64421092.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473617 + ... + 473752.

It is an arithmetic number, because the mean of its divisors is an integer number (9947385).

Almost surely, 2^64421092 is an apocalyptic number.

It is an amenable number.

64421092 is a deficient number, since it is larger than the sum of its proper divisors (54947528).

64421092 is a wasteful number, since it uses less digits than its factorization.

64421092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947390 (or 947388 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 64421092 is about 8026.2751011911. The cubic root of 64421092 is about 400.8753579737.

It can be divided in two parts, 644 and 21092, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 64421092 in words is "sixty-four million, four hundred twenty-one thousand, ninety-two".