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97896409 = 137530493
BaseRepresentation
bin1011101010111…
…00011111011001
320211012122121221
411311130133121
5200030141114
613414132041
72266051162
oct565343731
9224178557
1097896409
1150295026
1228951021
1317388190
14d004769
1588db524
hex5d5c7d9

97896409 has 4 divisors (see below), whose sum is σ = 105426916. Its totient is φ = 90365904.

The previous prime is 97896401. The next prime is 97896437. The reversal of 97896409 is 90469879.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17614809 + 80281600 = 4197^2 + 8960^2 .

It is a cyclic number.

It is not a de Polignac number, because 97896409 - 23 = 97896401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97896401) by changing a digit.

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, 3765234 + ... + 3765259.

It is an arithmetic number, because the mean of its divisors is an integer number (26356729).

Almost surely, 297896409 is an apocalyptic number.

It is an amenable number.

97896409 is a deficient number, since it is larger than the sum of its proper divisors (7530507).

97896409 is a wasteful number, since it uses less digits than its factorization.

97896409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7530506.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 97896409 is about 9894.2614176097. The cubic root of 97896409 is about 460.8811230537.

The spelling of 97896409 in words is "ninety-seven million, eight hundred ninety-six thousand, four hundred nine".

Divisors: 1 13 7530493 97896409