72469491 has 16 divisors (see below), whose sum is σ = 99225984. Its totient is φ = 47021184.

The previous prime is 72469489. The next prime is 72469493. The reversal of 72469491 is 19496427.

It is an interprime number because it is at equal distance from previous prime (72469489) and next prime (72469493).

It is not a de Polignac number, because 72469491 - 2¹ = 72469489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72469493) 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, 42640 + ... + 44306.

It is an arithmetic number, because the mean of its divisors is an integer number (6201624).

Almost surely, 2^72469491 is an apocalyptic number.

72469491 is a deficient number, since it is larger than the sum of its proper divisors (26756493).

72469491 is a wasteful number, since it uses less digits than its factorization.

72469491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050.

The product of its digits is 108864, while the sum is 42.

The square root of 72469491 is about 8512.9014442786. The cubic root of 72469491 is about 416.9190475962.

The spelling of 72469491 in words is "seventy-two million, four hundred sixty-nine thousand, four hundred ninety-one".